Ubuntu Manpage: nm-settings-nmcli - Description of settings and properties of NetworkManager connection

Provided by: network-manager_1.40.0-1ubuntu2_amd64

NAME

       nm-settings-nmcli - Description of settings and properties of NetworkManager connection
       profiles for nmcli

DESCRIPTION

NetworkManager is based on a concept of connection profiles, sometimes referred to as
connections only. These connection profiles contain a network configuration. When
NetworkManager activates a connection profile on a network device the configuration will
be applied and an active network connection will be established. Users are free to create
as many connection profiles as they see fit. Thus they are flexible in having various
network configurations for different networking needs.

NetworkManager provides an API for configuring connection profiles, for activating them to
configure the network, and inspecting the current network configuration. The command line
tool nmcli is a client application to NetworkManager that uses this API. See nmcli(1) for
details.

With commands like nmcli connection add, nmcli connection modify and nmcli connection
show, connection profiles can be created, modified and inspected. A profile consists of
properties. On D-Bus this follows the format as described by nm-settings-dbus(5), while
this manual page describes the settings format how they are expected by nmcli.

The settings and properties shown in tables below list all available connection
configuration options. However, note that not all settings are applicable to all
connection types. nmcli connection editor has also a built-in describe command that can
display description of particular settings and properties of this page.

The setting and property can be abbreviated provided they are unique. The list below also
shows aliases that can be used unqualified instead of the full name. For example
connection.interface-name and ifname refer to the same property.

connection setting
General Connection Profile Settings.

Properties:

auth-retries
The number of retries for the authentication. Zero means to try indefinitely; -1 means
to use a global default. If the global default is not set, the authentication retries
for 3 times before failing the connection.

Currently, this only applies to 802-1x authentication.

Format: int32

autoconnect
Alias: autoconnect

Whether or not the connection should be automatically connected by NetworkManager when
the resources for the connection are available. TRUE to automatically activate the
connection, FALSE to require manual intervention to activate the connection.

Autoconnect happens when the circumstances are suitable. That means for example that
the device is currently managed and not active. Autoconnect thus never replaces or
competes with an already active profile.

Note that autoconnect is not implemented for VPN profiles. See "secondaries" as an
alternative to automatically connect VPN profiles.

If multiple profiles are ready to autoconnect on the same device, the one with the
better "connection.autoconnect-priority" is chosen. If the priorities are equal, then
the most recently connected profile is activated. If the profiles were not connected
earlier or their "connection.timestamp" is identical, the choice is undefined.

Depending on "connection.multi-connect", a profile can (auto)connect only once at a
time or multiple times.

Format: boolean

autoconnect-priority
The autoconnect priority in range -999 to 999. If the connection is set to
autoconnect, connections with higher priority will be preferred. The higher number
means higher priority. Defaults to 0. Note that this property only matters if there
are more than one candidate profile to select for autoconnect. In case of equal
priority, the profile used most recently is chosen.

Format: int32

autoconnect-retries
The number of times a connection should be tried when autoactivating before giving up.
Zero means forever, -1 means the global default (4 times if not overridden). Setting
this to 1 means to try activation only once before blocking autoconnect. Note that
after a timeout, NetworkManager will try to autoconnect again.

Format: int32

autoconnect-slaves
Whether or not slaves of this connection should be automatically brought up when
NetworkManager activates this connection. This only has a real effect for master
connections. The properties "autoconnect", "autoconnect-priority" and
"autoconnect-retries" are unrelated to this setting. The permitted values are: 0:
leave slave connections untouched, 1: activate all the slave connections with this
connection, -1: default. If -1 (default) is set, global connection.autoconnect-slaves
is read to determine the real value. If it is default as well, this fallbacks to 0.

Format: NMSettingConnectionAutoconnectSlaves (int32)

dns-over-tls
Whether DNSOverTls (dns-over-tls) is enabled for the connection. DNSOverTls is a
technology which uses TLS to encrypt dns traffic.

The permitted values are: "yes" (2) use DNSOverTls and disabled fallback,
"opportunistic" (1) use DNSOverTls but allow fallback to unencrypted resolution, "no"
(0) don't ever use DNSOverTls. If unspecified "default" depends on the plugin used.
Systemd-resolved uses global setting.

This feature requires a plugin which supports DNSOverTls. Otherwise, the setting has
no effect. One such plugin is dns-systemd-resolved.

Format: int32

gateway-ping-timeout
If greater than zero, delay success of IP addressing until either the timeout is
reached, or an IP gateway replies to a ping.

Format: uint32

id
Alias: con-name

A human readable unique identifier for the connection, like "Work Wi-Fi" or "T-Mobile
3G".

Format: string

interface-name
Alias: ifname

The name of the network interface this connection is bound to. If not set, then the
connection can be attached to any interface of the appropriate type (subject to
restrictions imposed by other settings).

For software devices this specifies the name of the created device.

For connection types where interface names cannot easily be made persistent (e.g.
mobile broadband or USB Ethernet), this property should not be used. Setting this
property restricts the interfaces a connection can be used with, and if interface
names change or are reordered the connection may be applied to the wrong interface.

Format: string

lldp
Whether LLDP is enabled for the connection.

Format: int32

llmnr
Whether Link-Local Multicast Name Resolution (LLMNR) is enabled for the connection.
LLMNR is a protocol based on the Domain Name System (DNS) packet format that allows
both IPv4 and IPv6 hosts to perform name resolution for hosts on the same local link.

The permitted values are: "yes" (2) register hostname and resolving for the
connection, "no" (0) disable LLMNR for the interface, "resolve" (1) do not register
hostname but allow resolving of LLMNR host names If unspecified, "default" ultimately
depends on the DNS plugin (which for systemd-resolved currently means "yes").

This feature requires a plugin which supports LLMNR. Otherwise, the setting has no
effect. One such plugin is dns-systemd-resolved.

Format: int32

master
Alias: master

Interface name of the master device or UUID of the master connection.

Format: string

mdns
Whether mDNS is enabled for the connection.

The permitted values are: "yes" (2) register hostname and resolving for the
connection, "no" (0) disable mDNS for the interface, "resolve" (1) do not register
hostname but allow resolving of mDNS host names and "default" (-1) to allow lookup of
a global default in NetworkManager.conf. If unspecified, "default" ultimately depends
on the DNS plugin (which for systemd-resolved currently means "no").

This feature requires a plugin which supports mDNS. Otherwise, the setting has no
effect. One such plugin is dns-systemd-resolved.

Format: int32

metered
Whether the connection is metered.

When updating this property on a currently activated connection, the change takes
effect immediately.

Format: NMMetered (int32)

mptcp-flags
Whether to configure MPTCP endpoints and the address flags. If MPTCP is enabled in
NetworkManager, it will configure the addresses of the interface as MPTCP endpoints.
Note that IPv4 loopback addresses (127.0.0.0/8), IPv4 link local addresses
(169.254.0.0/16), the IPv6 loopback address (::1), IPv6 link local addresses
(fe80::/10), IPv6 unique local addresses (ULA, fc00::/7) and IPv6 privacy extension
addresses (rfc3041, ipv6.ip6-privacy) will be excluded from being configured as
endpoints.

If "disabled" (0x1), MPTCP handling for the interface is disabled and no endpoints are
registered.

The "enabled" (0x2) flag means that MPTCP handling is enabled. This flag can also be
implied from the presence of other flags.

Even when enabled, MPTCP handling will by default still be disabled unless
"/proc/sys/net/mptcp/enabled" sysctl is on. NetworkManager does not change the sysctl
and this is up to the administrator or distribution. To configure endpoints even if
the sysctl is disabled, "also-without-sysctl" (0x4) flag can be used. In that case,
NetworkManager doesn't look at the sysctl and configures endpoints regardless.

Even when enabled, NetworkManager will only configure MPTCP endpoints for a certain
address family, if there is a unicast default route (0.0.0.0/0 or ::/0) in the main
routing table. The flag "also-without-default-route" (0x8) can override that.

When MPTCP handling is enabled then endpoints are configured with the specified
address flags "signal" (0x10), "subflow" (0x20), "backup" (0x40), "fullmesh" (0x80).
See ip-mptcp(8) manual for additional information about the flags.

If the flags are zero (0x0), the global connection default from NetworkManager.conf is
honored. If still unspecified, the fallback is "enabled,subflow". Note that this means
that MPTCP is by default done depending on the "/proc/sys/net/mptcp/enabled" sysctl.

NetworkManager does not change the MPTCP limits nor enable MPTCP via
"/proc/sys/net/mptcp/enabled". That is a host configuration which the admin can change
via sysctl and ip-mptcp.

Strict reverse path filtering (rp_filter) breaks many MPTCP use cases, so when MPTCP
handling for IPv4 addresses on the interface is enabled, NetworkManager would loosen
the strict reverse path filtering (1) to the loose setting (2).

Format: uint32

mud-url
If configured, set to a Manufacturer Usage Description (MUD) URL that points to
manufacturer-recommended network policies for IoT devices. It is transmitted as a
DHCPv4 or DHCPv6 option. The value must be a valid URL starting with "https://".

The special value "none" is allowed to indicate that no MUD URL is used.

If the per-profile value is unspecified (the default), a global connection default
gets consulted. If still unspecified, the ultimate default is "none".

Format: string

multi-connect
Specifies whether the profile can be active multiple times at a particular moment. The
value is of type NMConnectionMultiConnect.

Format: int32

permissions
An array of strings defining what access a given user has to this connection. If this
is NULL or empty, all users are allowed to access this connection; otherwise users are
allowed if and only if they are in this list. When this is not empty, the connection
can be active only when one of the specified users is logged into an active session.
Each entry is of the form "[type]:[id]:[reserved]"; for example, "user:dcbw:blah".

At this time only the "user" [type] is allowed. Any other values are ignored and
reserved for future use. [id] is the username that this permission refers to, which
may not contain the ":" character. Any [reserved] information present must be ignored
and is reserved for future use. All of [type], [id], and [reserved] must be valid
UTF-8.

Format: array of string

read-only
FALSE if the connection can be modified using the provided settings service's D-Bus
interface with the right privileges, or TRUE if the connection is read-only and cannot
be modified.

Format: boolean

secondaries
List of connection UUIDs that should be activated when the base connection itself is
activated. Currently, only VPN connections are supported.

Format: array of string

slave-type
Alias: slave-type

Setting name of the device type of this slave's master connection (eg, "bond"), or
NULL if this connection is not a slave.

Format: string

stable-id
This represents the identity of the connection used for various purposes. It allows to
configure multiple profiles to share the identity. Also, the stable-id can contain
placeholders that are substituted dynamically and deterministically depending on the
context.

The stable-id is used for generating IPv6 stable private addresses with
ipv6.addr-gen-mode=stable-privacy. It is also used to seed the generated cloned MAC
address for ethernet.cloned-mac-address=stable and wifi.cloned-mac-address=stable. It
is also used as DHCP client identifier with ipv4.dhcp-client-id=stable and to derive
the DHCP DUID with ipv6.dhcp-duid=stable-[llt,ll,uuid].

Note that depending on the context where it is used, other parameters are also seeded
into the generation algorithm. For example, a per-host key is commonly also included,
so that different systems end up generating different IDs. Or with
ipv6.addr-gen-mode=stable-privacy, also the device's name is included, so that
different interfaces yield different addresses. The per-host key is the identity of
your machine and stored in /var/lib/NetworkManager/secret_key. See NetworkManager(8)
manual about the secret-key and the host identity.

The '$' character is treated special to perform dynamic substitutions at runtime.
Currently, supported are "${CONNECTION}", "${DEVICE}", "${MAC}", "${BOOT}",
"${RANDOM}". These effectively create unique IDs per-connection, per-device, per-boot,
or every time. Note that "${DEVICE}" corresponds to the interface name of the device
and "${MAC}" is the permanent MAC address of the device. Any unrecognized patterns
following '$' are treated verbatim, however are reserved for future use. You are thus
advised to avoid '$' or escape it as "$$". For example, set it to
"${CONNECTION}-${BOOT}-${DEVICE}" to create a unique id for this connection that
changes with every reboot and differs depending on the interface where the profile
activates.

If the value is unset, a global connection default is consulted. If the value is still
unset, the default is similar to "${CONNECTION}" and uses a unique, fixed ID for the
connection.

Format: string

timestamp
The time, in seconds since the Unix Epoch, that the connection was last _successfully_
fully activated.

NetworkManager updates the connection timestamp periodically when the connection is
active to ensure that an active connection has the latest timestamp. The property is
only meant for reading (changes to this property will not be preserved).

Format: uint64

type
Alias: type

Base type of the connection. For hardware-dependent connections, should contain the
setting name of the hardware-type specific setting (ie, "802-3-ethernet" or
"802-11-wireless" or "bluetooth", etc), and for non-hardware dependent connections
like VPN or otherwise, should contain the setting name of that setting type (ie, "vpn"
or "bridge", etc).

Format: string

uuid
A universally unique identifier for the connection, for example generated with
libuuid. It should be assigned when the connection is created, and never changed as
long as the connection still applies to the same network. For example, it should not
be changed when the "id" property or NMSettingIP4Config changes, but might need to be
re-created when the Wi-Fi SSID, mobile broadband network provider, or "type" property
changes.

The UUID must be in the format "2815492f-7e56-435e-b2e9-246bd7cdc664" (ie, contains
only hexadecimal characters and "-").

Format: string

wait-activation-delay
Time in milliseconds to wait for connection to be considered activated. The wait will
start after the pre-up dispatcher event.

The value 0 means no wait time. The default value is -1, which currently has the same
meaning as no wait time.

Format: int32

wait-device-timeout
Timeout in milliseconds to wait for device at startup. During boot, devices may take a
while to be detected by the driver. This property will cause to delay
NetworkManager-wait-online.service and nm-online to give the device a chance to
appear. This works by waiting for the given timeout until a compatible device for the
profile is available and managed.

The value 0 means no wait time. The default value is -1, which currently has the same
meaning as no wait time.

Format: int32

zone
The trust level of a the connection. Free form case-insensitive string (for example
"Home", "Work", "Public"). NULL or unspecified zone means the connection will be
placed in the default zone as defined by the firewall.

When updating this property on a currently activated connection, the change takes
effect immediately.

Format: string

6lowpan setting
6LoWPAN Settings.

Properties:

parent
Alias: dev

If given, specifies the parent interface name or parent connection UUID from which
this 6LowPAN interface should be created.

Format: string

802-1x setting
IEEE 802.1x Authentication Settings.

Properties:

altsubject-matches
List of strings to be matched against the altSubjectName of the certificate presented
by the authentication server. If the list is empty, no verification of the server
certificate's altSubjectName is performed.

Format: array of string

anonymous-identity
Anonymous identity string for EAP authentication methods. Used as the unencrypted
identity with EAP types that support different tunneled identity like EAP-TTLS.

Format: string

auth-timeout
A timeout for the authentication. Zero means the global default; if the global default
is not set, the authentication timeout is 25 seconds.

Format: int32

ca-cert
Contains the CA certificate if used by the EAP method specified in the "eap" property.

Certificate data is specified using a "scheme"; three are currently supported: blob,
path and pkcs#11 URL. When using the blob scheme this property should be set to the
certificate's DER encoded data. When using the path scheme, this property should be
set to the full UTF-8 encoded path of the certificate, prefixed with the string
"file://" and ending with a terminating NUL byte. This property can be unset even if
the EAP method supports CA certificates, but this allows man-in-the-middle attacks and
is NOT recommended.

Note that enabling NMSetting8021x:system-ca-certs will override this setting to use
the built-in path, if the built-in path is not a directory.

Format: byte array

ca-cert-password
The password used to access the CA certificate stored in "ca-cert" property. Only
makes sense if the certificate is stored on a PKCS#11 token that requires a login.

Format: string

ca-cert-password-flags
Flags indicating how to handle the "ca-cert-password" property.

Format: NMSettingSecretFlags (uint32)

ca-path
UTF-8 encoded path to a directory containing PEM or DER formatted certificates to be
added to the verification chain in addition to the certificate specified in the
"ca-cert" property.

If NMSetting8021x:system-ca-certs is enabled and the built-in CA path is an existing
directory, then this setting is ignored.

Format: string

client-cert
Contains the client certificate if used by the EAP method specified in the "eap"
property.

Certificate data is specified using a "scheme"; two are currently supported: blob and
path. When using the blob scheme (which is backwards compatible with NM 0.7.x) this
property should be set to the certificate's DER encoded data. When using the path
scheme, this property should be set to the full UTF-8 encoded path of the certificate,
prefixed with the string "file://" and ending with a terminating NUL byte.

Format: byte array

client-cert-password
The password used to access the client certificate stored in "client-cert" property.
Only makes sense if the certificate is stored on a PKCS#11 token that requires a
login.

Format: string

client-cert-password-flags
Flags indicating how to handle the "client-cert-password" property.

Format: NMSettingSecretFlags (uint32)

domain-match
Constraint for server domain name. If set, this list of FQDNs is used as a match
requirement for dNSName element(s) of the certificate presented by the authentication
server. If a matching dNSName is found, this constraint is met. If no dNSName values
are present, this constraint is matched against SubjectName CN using the same
comparison. Multiple valid FQDNs can be passed as a ";" delimited list.

Format: string

domain-suffix-match
Constraint for server domain name. If set, this FQDN is used as a suffix match
requirement for dNSName element(s) of the certificate presented by the authentication
server. If a matching dNSName is found, this constraint is met. If no dNSName values
are present, this constraint is matched against SubjectName CN using same suffix match
comparison. Since version 1.24, multiple valid FQDNs can be passed as a ";" delimited
list.

Format: string

eap
The allowed EAP method to be used when authenticating to the network with 802.1x.
Valid methods are: "leap", "md5", "tls", "peap", "ttls", "pwd", and "fast". Each
method requires different configuration using the properties of this setting; refer to
wpa_supplicant documentation for the allowed combinations.

Format: array of string

identity
Identity string for EAP authentication methods. Often the user's user or login name.

Format: string

optional
Whether the 802.1X authentication is optional. If TRUE, the activation will continue
even after a timeout or an authentication failure. Setting the property to TRUE is
currently allowed only for Ethernet connections. If set to FALSE, the activation can
continue only after a successful authentication.

Format: boolean

pac-file
UTF-8 encoded file path containing PAC for EAP-FAST.

Format: string

password
UTF-8 encoded password used for EAP authentication methods. If both the "password"
property and the "password-raw" property are specified, "password" is preferred.

Format: string

password-flags
Flags indicating how to handle the "password" property.

Format: NMSettingSecretFlags (uint32)

password-raw
Password used for EAP authentication methods, given as a byte array to allow passwords
in other encodings than UTF-8 to be used. If both the "password" property and the
"password-raw" property are specified, "password" is preferred.

Format: byte array

password-raw-flags
Flags indicating how to handle the "password-raw" property.

Format: NMSettingSecretFlags (uint32)

phase1-auth-flags
Specifies authentication flags to use in "phase 1" outer authentication using
NMSetting8021xAuthFlags options. The individual TLS versions can be explicitly
disabled. If a certain TLS disable flag is not set, it is up to the supplicant to
allow or forbid it. The TLS options map to tls_disable_tlsv1_x settings. See the
wpa_supplicant documentation for more details.

Format: uint32

phase1-fast-provisioning
Enables or disables in-line provisioning of EAP-FAST credentials when FAST is
specified as the EAP method in the "eap" property. Recognized values are "0"
(disabled), "1" (allow unauthenticated provisioning), "2" (allow authenticated
provisioning), and "3" (allow both authenticated and unauthenticated provisioning).
See the wpa_supplicant documentation for more details.

Format: string

phase1-peaplabel
Forces use of the new PEAP label during key derivation. Some RADIUS servers may
require forcing the new PEAP label to interoperate with PEAPv1. Set to "1" to force
use of the new PEAP label. See the wpa_supplicant documentation for more details.

Format: string

phase1-peapver
Forces which PEAP version is used when PEAP is set as the EAP method in the "eap"
property. When unset, the version reported by the server will be used. Sometimes when
using older RADIUS servers, it is necessary to force the client to use a particular
PEAP version. To do so, this property may be set to "0" or "1" to force that specific
PEAP version.

Format: string

phase2-altsubject-matches
List of strings to be matched against the altSubjectName of the certificate presented
by the authentication server during the inner "phase 2" authentication. If the list is
empty, no verification of the server certificate's altSubjectName is performed.

Format: array of string

phase2-auth
Specifies the allowed "phase 2" inner authentication method when an EAP method that
uses an inner TLS tunnel is specified in the "eap" property. For TTLS this property
selects one of the supported non-EAP inner methods: "pap", "chap", "mschap",
"mschapv2" while "phase2-autheap" selects an EAP inner method. For PEAP this selects
an inner EAP method, one of: "gtc", "otp", "md5" and "tls". Each "phase 2" inner
method requires specific parameters for successful authentication; see the
wpa_supplicant documentation for more details. Both "phase2-auth" and "phase2-autheap"
cannot be specified.

Format: string

phase2-autheap
Specifies the allowed "phase 2" inner EAP-based authentication method when TTLS is
specified in the "eap" property. Recognized EAP-based "phase 2" methods are "md5",
"mschapv2", "otp", "gtc", and "tls". Each "phase 2" inner method requires specific
parameters for successful authentication; see the wpa_supplicant documentation for
more details.

Format: string

phase2-ca-cert
Contains the "phase 2" CA certificate if used by the EAP method specified in the
"phase2-auth" or "phase2-autheap" properties.

Note that enabling NMSetting8021x:system-ca-certs will override this setting to use
the built-in path, if the built-in path is not a directory.

Format: byte array

phase2-ca-cert-password
The password used to access the "phase2" CA certificate stored in "phase2-ca-cert"
property. Only makes sense if the certificate is stored on a PKCS#11 token that
requires a login.

Format: string

phase2-ca-cert-password-flags
Flags indicating how to handle the "phase2-ca-cert-password" property.

Format: NMSettingSecretFlags (uint32)

phase2-ca-path
UTF-8 encoded path to a directory containing PEM or DER formatted certificates to be
added to the verification chain in addition to the certificate specified in the
"phase2-ca-cert" property.

If NMSetting8021x:system-ca-certs is enabled and the built-in CA path is an existing
directory, then this setting is ignored.

Format: string

phase2-client-cert
Contains the "phase 2" client certificate if used by the EAP method specified in the
"phase2-auth" or "phase2-autheap" properties.

Format: byte array

phase2-client-cert-password
The password used to access the "phase2" client certificate stored in
"phase2-client-cert" property. Only makes sense if the certificate is stored on a
PKCS#11 token that requires a login.

Format: string

phase2-client-cert-password-flags
Flags indicating how to handle the "phase2-client-cert-password" property.

Format: NMSettingSecretFlags (uint32)

phase2-domain-match
Constraint for server domain name. If set, this list of FQDNs is used as a match
requirement for dNSName element(s) of the certificate presented by the authentication
server during the inner "phase 2" authentication. If a matching dNSName is found, this
constraint is met. If no dNSName values are present, this constraint is matched
against SubjectName CN using the same comparison. Multiple valid FQDNs can be passed
as a ";" delimited list.

Format: string

phase2-domain-suffix-match
Constraint for server domain name. If set, this FQDN is used as a suffix match
requirement for dNSName element(s) of the certificate presented by the authentication
server during the inner "phase 2" authentication. If a matching dNSName is found, this
constraint is met. If no dNSName values are present, this constraint is matched
against SubjectName CN using same suffix match comparison. Since version 1.24,
multiple valid FQDNs can be passed as a ";" delimited list.

Format: string

phase2-private-key
Contains the "phase 2" inner private key when the "phase2-auth" or "phase2-autheap"
property is set to "tls".

Key data is specified using a "scheme"; two are currently supported: blob and path.
When using the blob scheme and private keys, this property should be set to the key's
encrypted PEM encoded data. When using private keys with the path scheme, this
property should be set to the full UTF-8 encoded path of the key, prefixed with the
string "file://" and ending with a terminating NUL byte. When using PKCS#12 format
private keys and the blob scheme, this property should be set to the PKCS#12 data and
the "phase2-private-key-password" property must be set to password used to decrypt the
PKCS#12 certificate and key. When using PKCS#12 files and the path scheme, this
property should be set to the full UTF-8 encoded path of the key, prefixed with the
string "file://" and ending with a terminating NUL byte, and as with the blob scheme
the "phase2-private-key-password" property must be set to the password used to decode
the PKCS#12 private key and certificate.

Format: byte array

phase2-private-key-password
The password used to decrypt the "phase 2" private key specified in the
"phase2-private-key" property when the private key either uses the path scheme, or is
a PKCS#12 format key.

Format: string

phase2-private-key-password-flags
Flags indicating how to handle the "phase2-private-key-password" property.

Format: NMSettingSecretFlags (uint32)

phase2-subject-match
Substring to be matched against the subject of the certificate presented by the
authentication server during the inner "phase 2" authentication. When unset, no
verification of the authentication server certificate's subject is performed. This
property provides little security, if any, and its use is deprecated in favor of
NMSetting8021x:phase2-domain-suffix-match.

Format: string

pin
PIN used for EAP authentication methods.

Format: string

pin-flags
Flags indicating how to handle the "pin" property.

Format: NMSettingSecretFlags (uint32)

private-key
Contains the private key when the "eap" property is set to "tls".

Key data is specified using a "scheme"; two are currently supported: blob and path.
When using the blob scheme and private keys, this property should be set to the key's
encrypted PEM encoded data. When using private keys with the path scheme, this
property should be set to the full UTF-8 encoded path of the key, prefixed with the
string "file://" and ending with a terminating NUL byte. When using PKCS#12 format
private keys and the blob scheme, this property should be set to the PKCS#12 data and
the "private-key-password" property must be set to password used to decrypt the
PKCS#12 certificate and key. When using PKCS#12 files and the path scheme, this
property should be set to the full UTF-8 encoded path of the key, prefixed with the
string "file://" and ending with a terminating NUL byte, and as with the blob scheme
the "private-key-password" property must be set to the password used to decode the
PKCS#12 private key and certificate.

WARNING: "private-key" is not a "secret" property, and thus unencrypted private key
data using the BLOB scheme may be readable by unprivileged users. Private keys should
always be encrypted with a private key password to prevent unauthorized access to
unencrypted private key data.

Format: byte array

private-key-password
The password used to decrypt the private key specified in the "private-key" property
when the private key either uses the path scheme, or if the private key is a PKCS#12
format key.

Format: string

private-key-password-flags
Flags indicating how to handle the "private-key-password" property.

Format: NMSettingSecretFlags (uint32)

subject-match
Substring to be matched against the subject of the certificate presented by the
authentication server. When unset, no verification of the authentication server
certificate's subject is performed. This property provides little security, if any,
and its use is deprecated in favor of NMSetting8021x:domain-suffix-match.

Format: string

system-ca-certs
When TRUE, overrides the "ca-path" and "phase2-ca-path" properties using the system CA
directory specified at configure time with the --system-ca-path switch. The
certificates in this directory are added to the verification chain in addition to any
certificates specified by the "ca-cert" and "phase2-ca-cert" properties. If the path
provided with --system-ca-path is rather a file name (bundle of trusted CA
certificates), it overrides "ca-cert" and "phase2-ca-cert" properties instead (sets
ca_cert/ca_cert2 options for wpa_supplicant).

Format: boolean

adsl setting
ADSL Settings.

Properties:

encapsulation
Alias: encapsulation

Encapsulation of ADSL connection. Can be "vcmux" or "llc".

Format: string

password
Alias: password

Password used to authenticate with the ADSL service.

Format: string

password-flags
Flags indicating how to handle the "password" property.

Format: NMSettingSecretFlags (uint32)

protocol
Alias: protocol

ADSL connection protocol. Can be "pppoa", "pppoe" or "ipoatm".

Format: string

username
Alias: username

Username used to authenticate with the ADSL service.

Format: string

vci
VCI of ADSL connection

Format: uint32

vpi
VPI of ADSL connection

Format: uint32

bluetooth setting
Bluetooth Settings.

Properties:

bdaddr
Alias: addr

The Bluetooth address of the device.

Format: byte array

type
Alias: bt-type

Either "dun" for Dial-Up Networking connections or "panu" for Personal Area Networking
connections to devices supporting the NAP profile.

Format: string

bond setting
Bonding Settings.

Properties:

options
Dictionary of key/value pairs of bonding options. Both keys and values must be
strings. Option names must contain only alphanumeric characters (ie, [a-zA-Z0-9]).

Format: dict of string to string

bridge setting
Bridging Settings.

Properties:

ageing-time
Alias: ageing-time

The Ethernet MAC address aging time, in seconds.

Format: uint32

forward-delay
Alias: forward-delay

The Spanning Tree Protocol (STP) forwarding delay, in seconds.

Format: uint32

group-address
If specified, The MAC address of the multicast group this bridge uses for STP.

The address must be a link-local address in standard Ethernet MAC address format, ie
an address of the form 01:80:C2:00:00:0X, with X in [0, 4..F]. If not specified the
default value is 01:80:C2:00:00:00.

Format: byte array

group-forward-mask
Alias: group-forward-mask

A mask of group addresses to forward. Usually, group addresses in the range from
01:80:C2:00:00:00 to 01:80:C2:00:00:0F are not forwarded according to standards. This
property is a mask of 16 bits, each corresponding to a group address in that range
that must be forwarded. The mask can't have bits 0, 1 or 2 set because they are used
for STP, MAC pause frames and LACP.

Format: uint32

hello-time
Alias: hello-time

The Spanning Tree Protocol (STP) hello time, in seconds.

Format: uint32

mac-address
Alias: mac

If specified, the MAC address of bridge. When creating a new bridge, this MAC address
will be set.

If this field is left unspecified, the "ethernet.cloned-mac-address" is referred
instead to generate the initial MAC address. Note that setting
"ethernet.cloned-mac-address" anyway overwrites the MAC address of the bridge later
while activating the bridge. Hence, this property is deprecated. Deprecated: 1

Format: byte array

max-age
Alias: max-age

The Spanning Tree Protocol (STP) maximum message age, in seconds.

Format: uint32

multicast-hash-max
Set maximum size of multicast hash table (value must be a power of 2).

Format: uint32

multicast-last-member-count
Set the number of queries the bridge will send before stopping forwarding a multicast
group after a "leave" message has been received.

Format: uint32

multicast-last-member-interval
Set interval (in deciseconds) between queries to find remaining members of a group,
after a "leave" message is received.

Format: uint64

multicast-membership-interval
Set delay (in deciseconds) after which the bridge will leave a group, if no membership
reports for this group are received.

Format: uint64

multicast-querier
Enable or disable sending of multicast queries by the bridge. If not specified the
option is disabled.

Format: boolean

multicast-querier-interval
If no queries are seen after this delay (in deciseconds) has passed, the bridge will
start to send its own queries.

Format: uint64

multicast-query-interval
Interval (in deciseconds) between queries sent by the bridge after the end of the
startup phase.

Format: uint64

multicast-query-response-interval
Set the Max Response Time/Max Response Delay (in deciseconds) for IGMP/MLD queries
sent by the bridge.

Format: uint64

multicast-query-use-ifaddr
If enabled the bridge's own IP address is used as the source address for IGMP queries
otherwise the default of 0.0.0.0 is used.

Format: boolean

multicast-router
Sets bridge's multicast router. Multicast-snooping must be enabled for this option to
work.

Supported values are: 'auto', 'disabled', 'enabled' to which kernel assigns the
numbers 1, 0, and 2, respectively. If not specified the default value is 'auto' (1).

Format: string

multicast-snooping
Alias: multicast-snooping

Controls whether IGMP snooping is enabled for this bridge. Note that if snooping was
automatically disabled due to hash collisions, the system may refuse to enable the
feature until the collisions are resolved.

Format: boolean

multicast-startup-query-count
Set the number of IGMP queries to send during startup phase.

Format: uint32

multicast-startup-query-interval
Sets the time (in deciseconds) between queries sent out at startup to determine
membership information.

Format: uint64

priority
Alias: priority

Sets the Spanning Tree Protocol (STP) priority for this bridge. Lower values are
"better"; the lowest priority bridge will be elected the root bridge.

Format: uint32

stp
Alias: stp

Controls whether Spanning Tree Protocol (STP) is enabled for this bridge.

Format: boolean

vlan-default-pvid
The default PVID for the ports of the bridge, that is the VLAN id assigned to incoming
untagged frames.

Format: uint32

vlan-filtering
Control whether VLAN filtering is enabled on the bridge.

Format: boolean

vlan-protocol
If specified, the protocol used for VLAN filtering.

Supported values are: '802.1Q', '802.1ad'. If not specified the default value is
'802.1Q'.

Format: string

vlan-stats-enabled
Controls whether per-VLAN stats accounting is enabled.

Format: boolean

vlans
Array of bridge VLAN objects. In addition to the VLANs specified here, the bridge will
also have the default-pvid VLAN configured by the bridge.vlan-default-pvid property.

In nmcli the VLAN list can be specified with the following syntax:

$vid [pvid] [untagged] [, $vid [pvid] [untagged]]...

where $vid is either a single id between 1 and 4094 or a range, represented as a
couple of ids separated by a dash.

Format: array of vardict

bridge-port setting
Bridge Port Settings.

Properties:

hairpin-mode
Alias: hairpin

Enables or disables "hairpin mode" for the port, which allows frames to be sent back
out through the port the frame was received on.

Format: boolean

path-cost
Alias: path-cost

The Spanning Tree Protocol (STP) port cost for destinations via this port.

Format: uint32

priority
Alias: priority

The Spanning Tree Protocol (STP) priority of this bridge port.

Format: uint32

vlans
Array of bridge VLAN objects. In addition to the VLANs specified here, the port will
also have the default-pvid VLAN configured on the bridge by the
bridge.vlan-default-pvid property.

In nmcli the VLAN list can be specified with the following syntax:

$vid [pvid] [untagged] [, $vid [pvid] [untagged]]...

where $vid is either a single id between 1 and 4094 or a range, represented as a
couple of ids separated by a dash.

Format: array of vardict

cdma setting
CDMA-based Mobile Broadband Settings.

Properties:

mtu
If non-zero, only transmit packets of the specified size or smaller, breaking larger
packets up into multiple frames.

Format: uint32

number
The number to dial to establish the connection to the CDMA-based mobile broadband
network, if any. If not specified, the default number (#777) is used when required.

Format: string

password
Alias: password

The password used to authenticate with the network, if required. Many providers do not
require a password, or accept any password. But if a password is required, it is
specified here.

Format: string

password-flags
Flags indicating how to handle the "password" property.

Format: NMSettingSecretFlags (uint32)

username
Alias: user

The username used to authenticate with the network, if required. Many providers do not
require a username, or accept any username. But if a username is required, it is
specified here.

Format: string

dcb setting
Data Center Bridging Settings.

Properties:

app-fcoe-flags
Specifies the NMSettingDcbFlags for the DCB FCoE application. Flags may be any
combination of NM_SETTING_DCB_FLAG_ENABLE (0x1), NM_SETTING_DCB_FLAG_ADVERTISE (0x2),
and NM_SETTING_DCB_FLAG_WILLING (0x4).

Format: NMSettingDcbFlags (uint32)

app-fcoe-mode
The FCoE controller mode; either "fabric" or "vn2vn".

Since 1.34, NULL is the default and means "fabric". Before 1.34, NULL was rejected as
invalid and the default was "fabric".

Format: string

app-fcoe-priority
The highest User Priority (0 - 7) which FCoE frames should use, or -1 for default
priority. Only used when the "app-fcoe-flags" property includes the
NM_SETTING_DCB_FLAG_ENABLE (0x1) flag.

Format: int32

app-fip-flags
Specifies the NMSettingDcbFlags for the DCB FIP application. Flags may be any
combination of NM_SETTING_DCB_FLAG_ENABLE (0x1), NM_SETTING_DCB_FLAG_ADVERTISE (0x2),
and NM_SETTING_DCB_FLAG_WILLING (0x4).

Format: NMSettingDcbFlags (uint32)

app-fip-priority
The highest User Priority (0 - 7) which FIP frames should use, or -1 for default
priority. Only used when the "app-fip-flags" property includes the
NM_SETTING_DCB_FLAG_ENABLE (0x1) flag.

Format: int32

app-iscsi-flags
Specifies the NMSettingDcbFlags for the DCB iSCSI application. Flags may be any
combination of NM_SETTING_DCB_FLAG_ENABLE (0x1), NM_SETTING_DCB_FLAG_ADVERTISE (0x2),
and NM_SETTING_DCB_FLAG_WILLING (0x4).

Format: NMSettingDcbFlags (uint32)

app-iscsi-priority
The highest User Priority (0 - 7) which iSCSI frames should use, or -1 for default
priority. Only used when the "app-iscsi-flags" property includes the
NM_SETTING_DCB_FLAG_ENABLE (0x1) flag.

Format: int32

priority-bandwidth
An array of 8 uint values, where the array index corresponds to the User Priority (0 -
7) and the value indicates the percentage of bandwidth of the priority's assigned
group that the priority may use. The sum of all percentages for priorities which
belong to the same group must total 100 percents.

Format: array of uint32

priority-flow-control
An array of 8 boolean values, where the array index corresponds to the User Priority
(0 - 7) and the value indicates whether or not the corresponding priority should
transmit priority pause.

Format: array of uint32

priority-flow-control-flags
Specifies the NMSettingDcbFlags for DCB Priority Flow Control (PFC). Flags may be any
combination of NM_SETTING_DCB_FLAG_ENABLE (0x1), NM_SETTING_DCB_FLAG_ADVERTISE (0x2),
and NM_SETTING_DCB_FLAG_WILLING (0x4).

Format: NMSettingDcbFlags (uint32)

priority-group-bandwidth
An array of 8 uint values, where the array index corresponds to the Priority Group ID
(0 - 7) and the value indicates the percentage of link bandwidth allocated to that
group. Allowed values are 0 - 100, and the sum of all values must total 100 percents.

Format: array of uint32

priority-group-flags
Specifies the NMSettingDcbFlags for DCB Priority Groups. Flags may be any combination
of NM_SETTING_DCB_FLAG_ENABLE (0x1), NM_SETTING_DCB_FLAG_ADVERTISE (0x2), and
NM_SETTING_DCB_FLAG_WILLING (0x4).

Format: NMSettingDcbFlags (uint32)

priority-group-id
An array of 8 uint values, where the array index corresponds to the User Priority (0 -
7) and the value indicates the Priority Group ID. Allowed Priority Group ID values are
0 - 7 or 15 for the unrestricted group.

Format: array of uint32

priority-strict-bandwidth
An array of 8 boolean values, where the array index corresponds to the User Priority
(0 - 7) and the value indicates whether or not the priority may use all of the
bandwidth allocated to its assigned group.

Format: array of uint32

priority-traffic-class
An array of 8 uint values, where the array index corresponds to the User Priority (0 -
7) and the value indicates the traffic class (0 - 7) to which the priority is mapped.

Format: array of uint32

ethtool setting
Ethtool Ethernet Settings.

Properties:

coalesce-adaptive-rx

coalesce-adaptive-tx

coalesce-pkt-rate-high

coalesce-pkt-rate-low

coalesce-rx-frames

coalesce-rx-frames-high

coalesce-rx-frames-irq

coalesce-rx-frames-low

coalesce-rx-usecs

coalesce-rx-usecs-high

coalesce-rx-usecs-irq

coalesce-rx-usecs-low

coalesce-sample-interval

coalesce-stats-block-usecs

coalesce-tx-frames

coalesce-tx-frames-high

coalesce-tx-frames-irq

coalesce-tx-frames-low

coalesce-tx-usecs

coalesce-tx-usecs-high

coalesce-tx-usecs-irq

coalesce-tx-usecs-low

feature-esp-hw-offload

feature-esp-tx-csum-hw-offload

feature-fcoe-mtu

feature-gro

feature-gso

feature-highdma

feature-hw-tc-offload

feature-l2-fwd-offload

feature-loopback

feature-lro

feature-macsec-hw-offload

feature-ntuple

feature-rx

feature-rx-all

feature-rx-fcs

feature-rx-gro-hw

feature-rx-gro-list

feature-rx-udp-gro-forwarding

feature-rx-udp_tunnel-port-offload

feature-rx-vlan-filter

feature-rx-vlan-stag-filter

feature-rx-vlan-stag-hw-parse

feature-rxhash

feature-rxvlan

feature-sg

feature-tls-hw-record

feature-tls-hw-rx-offload

feature-tls-hw-tx-offload

feature-tso

feature-tx

feature-tx-checksum-fcoe-crc

feature-tx-checksum-ip-generic

feature-tx-checksum-ipv4

feature-tx-checksum-ipv6

feature-tx-checksum-sctp

feature-tx-esp-segmentation

feature-tx-fcoe-segmentation

feature-tx-gre-csum-segmentation

feature-tx-gre-segmentation

feature-tx-gso-list

feature-tx-gso-partial

feature-tx-gso-robust

feature-tx-ipxip4-segmentation

feature-tx-ipxip6-segmentation

feature-tx-nocache-copy

feature-tx-scatter-gather

feature-tx-scatter-gather-fraglist

feature-tx-sctp-segmentation

feature-tx-tcp-ecn-segmentation

feature-tx-tcp-mangleid-segmentation

feature-tx-tcp-segmentation

feature-tx-tcp6-segmentation

feature-tx-tunnel-remcsum-segmentation

feature-tx-udp-segmentation

feature-tx-udp_tnl-csum-segmentation

feature-tx-udp_tnl-segmentation

feature-tx-vlan-stag-hw-insert

feature-txvlan

pause-autoneg

pause-rx

pause-tx

ring-rx

ring-rx-jumbo

ring-rx-mini

ring-tx

gsm setting
GSM-based Mobile Broadband Settings.

Properties:

apn
Alias: apn

The GPRS Access Point Name specifying the APN used when establishing a data session
with the GSM-based network. The APN often determines how the user will be billed for
their network usage and whether the user has access to the Internet or just a
provider-specific walled-garden, so it is important to use the correct APN for the
user's mobile broadband plan. The APN may only be composed of the characters a-z, 0-9,
., and - per GSM 03.60 Section 14.9.

Format: string

auto-config
When TRUE, the settings such as APN, username, or password will default to values that
match the network the modem will register to in the Mobile Broadband Provider
database.

Format: boolean

device-id
The device unique identifier (as given by the WWAN management service) which this
connection applies to. If given, the connection will only apply to the specified
device.

Format: string

home-only
When TRUE, only connections to the home network will be allowed. Connections to
roaming networks will not be made.

Format: boolean

mtu
If non-zero, only transmit packets of the specified size or smaller, breaking larger
packets up into multiple frames.

Format: uint32

network-id
The Network ID (GSM LAI format, ie MCC-MNC) to force specific network registration. If
the Network ID is specified, NetworkManager will attempt to force the device to
register only on the specified network. This can be used to ensure that the device
does not roam when direct roaming control of the device is not otherwise possible.

Format: string

number
Legacy setting that used to help establishing PPP data sessions for GSM-based modems.
Deprecated: 1

Format: string

password
Alias: password

The password used to authenticate with the network, if required. Many providers do not
require a password, or accept any password. But if a password is required, it is
specified here.

Format: string

password-flags
Flags indicating how to handle the "password" property.

Format: NMSettingSecretFlags (uint32)

pin
If the SIM is locked with a PIN it must be unlocked before any other operations are
requested. Specify the PIN here to allow operation of the device.

Format: string

pin-flags
Flags indicating how to handle the "pin" property.

Format: NMSettingSecretFlags (uint32)

sim-id
The SIM card unique identifier (as given by the WWAN management service) which this
connection applies to. If given, the connection will apply to any device also allowed
by "device-id" which contains a SIM card matching the given identifier.

Format: string

sim-operator-id
A MCC/MNC string like "310260" or "21601" identifying the specific mobile network
operator which this connection applies to. If given, the connection will apply to any
device also allowed by "device-id" and "sim-id" which contains a SIM card provisioned
by the given operator.

Format: string

username
Alias: user

The username used to authenticate with the network, if required. Many providers do not
require a username, or accept any username. But if a username is required, it is
specified here.

Format: string

infiniband setting
Infiniband Settings.

Properties:

mac-address
Alias: mac

If specified, this connection will only apply to the IPoIB device whose permanent MAC
address matches. This property does not change the MAC address of the device (i.e. MAC
spoofing).

Format: byte array

mtu
Alias: mtu

If non-zero, only transmit packets of the specified size or smaller, breaking larger
packets up into multiple frames.

Format: uint32

p-key
Alias: p-key

The InfiniBand P_Key to use for this device. A value of -1 means to use the default
P_Key (aka "the P_Key at index 0"). Otherwise, it is a 16-bit unsigned integer, whose
high bit is set if it is a "full membership" P_Key.

Format: int32

parent
Alias: parent

The interface name of the parent device of this device. Normally NULL, but if the
"p_key" property is set, then you must specify the base device by setting either this
property or "mac-address".

Format: string

transport-mode
Alias: transport-mode

The IP-over-InfiniBand transport mode. Either "datagram" or "connected".

Format: string

ipv4 setting
IPv4 Settings.

Properties:

addresses
Alias: ip4

Array of IP addresses.

Format: a comma separated list of addresses

dad-timeout
Timeout in milliseconds used to check for the presence of duplicate IP addresses on
the network. If an address conflict is detected, the activation will fail. A zero
value means that no duplicate address detection is performed, -1 means the default
value (either configuration ipvx.dad-timeout override or zero). A value greater than
zero is a timeout in milliseconds.

The property is currently implemented only for IPv4.

Format: int32

dhcp-client-id
A string sent to the DHCP server to identify the local machine which the DHCP server
may use to customize the DHCP lease and options. When the property is a hex string
('aa:bb:cc') it is interpreted as a binary client ID, in which case the first byte is
assumed to be the 'type' field as per RFC 2132 section 9.14 and the remaining bytes
may be an hardware address (e.g. '01:xx:xx:xx:xx:xx:xx' where 1 is the Ethernet ARP
type and the rest is a MAC address). If the property is not a hex string it is
considered as a non-hardware-address client ID and the 'type' field is set to 0.

The special values "mac" and "perm-mac" are supported, which use the current or
permanent MAC address of the device to generate a client identifier with type ethernet
(01). Currently, these options only work for ethernet type of links.

The special value "ipv6-duid" uses the DUID from "ipv6.dhcp-duid" property as an
RFC4361-compliant client identifier. As IAID it uses "ipv4.dhcp-iaid" and falls back
to "ipv6.dhcp-iaid" if unset.

The special value "duid" generates a RFC4361-compliant client identifier based on
"ipv4.dhcp-iaid" and uses a DUID generated by hashing /etc/machine-id.

The special value "stable" is supported to generate a type 0 client identifier based
on the stable-id (see connection.stable-id) and a per-host key. If you set the
stable-id, you may want to include the "${DEVICE}" or "${MAC}" specifier to get a
per-device key.

If unset, a globally configured default is used. If still unset, the default depends
on the DHCP plugin.

Format: string

dhcp-fqdn
If the "dhcp-send-hostname" property is TRUE, then the specified FQDN will be sent to
the DHCP server when acquiring a lease. This property and "dhcp-hostname" are mutually
exclusive and cannot be set at the same time.

Format: string

dhcp-hostname
If the "dhcp-send-hostname" property is TRUE, then the specified name will be sent to
the DHCP server when acquiring a lease. This property and "dhcp-fqdn" are mutually
exclusive and cannot be set at the same time.

Format: string

dhcp-hostname-flags
Flags for the DHCP hostname and FQDN.

Currently, this property only includes flags to control the FQDN flags set in the DHCP
FQDN option. Supported FQDN flags are NM_DHCP_HOSTNAME_FLAG_FQDN_SERV_UPDATE (0x1),
NM_DHCP_HOSTNAME_FLAG_FQDN_ENCODED (0x2) and NM_DHCP_HOSTNAME_FLAG_FQDN_NO_UPDATE
(0x4). When no FQDN flag is set and NM_DHCP_HOSTNAME_FLAG_FQDN_CLEAR_FLAGS (0x8) is
set, the DHCP FQDN option will contain no flag. Otherwise, if no FQDN flag is set and
NM_DHCP_HOSTNAME_FLAG_FQDN_CLEAR_FLAGS (0x8) is not set, the standard FQDN flags are
set in the request: NM_DHCP_HOSTNAME_FLAG_FQDN_SERV_UPDATE (0x1),
NM_DHCP_HOSTNAME_FLAG_FQDN_ENCODED (0x2) for IPv4 and
NM_DHCP_HOSTNAME_FLAG_FQDN_SERV_UPDATE (0x1) for IPv6.

When this property is set to the default value NM_DHCP_HOSTNAME_FLAG_NONE (0x0), a
global default is looked up in NetworkManager configuration. If that value is unset or
also NM_DHCP_HOSTNAME_FLAG_NONE (0x0), then the standard FQDN flags described above
are sent in the DHCP requests.

Format: uint32

dhcp-iaid
A string containing the "Identity Association Identifier" (IAID) used by the DHCP
client. The property is a 32-bit decimal value or a special value among "mac",
"perm-mac", "ifname" and "stable". When set to "mac" (or "perm-mac"), the last 4 bytes
of the current (or permanent) MAC address are used as IAID. When set to "ifname", the
IAID is computed by hashing the interface name. The special value "stable" can be used
to generate an IAID based on the stable-id (see connection.stable-id), a per-host key
and the interface name. When the property is unset, the value from global
configuration is used; if no global default is set then the IAID is assumed to be
"ifname". Note that at the moment this property is ignored for IPv6 by dhclient, which
always derives the IAID from the MAC address.

Format: string

dhcp-reject-servers
Array of servers from which DHCP offers must be rejected. This property is useful to
avoid getting a lease from misconfigured or rogue servers.

For DHCPv4, each element must be an IPv4 address, optionally followed by a slash and a
prefix length (e.g. "192.168.122.0/24").

This property is currently not implemented for DHCPv6.

Format: array of string

dhcp-send-hostname
If TRUE, a hostname is sent to the DHCP server when acquiring a lease. Some DHCP
servers use this hostname to update DNS databases, essentially providing a static
hostname for the computer. If the "dhcp-hostname" property is NULL and this property
is TRUE, the current persistent hostname of the computer is sent.

Format: boolean

dhcp-timeout
A timeout for a DHCP transaction in seconds. If zero (the default), a globally
configured default is used. If still unspecified, a device specific timeout is used
(usually 45 seconds).

Set to 2147483647 (MAXINT32) for infinity.

Format: int32

dhcp-vendor-class-identifier
The Vendor Class Identifier DHCP option (60). Special characters in the data string
may be escaped using C-style escapes, nevertheless this property cannot contain nul
bytes. If the per-profile value is unspecified (the default), a global connection
default gets consulted. If still unspecified, the DHCP option is not sent to the
server.

Since 1.28

Format: string

dns
Array of IP addresses of DNS servers.

Format: array of uint32

dns-options
Array of DNS options as described in man 5 resolv.conf.

NULL means that the options are unset and left at the default. In this case
NetworkManager will use default options. This is distinct from an empty list of
properties.

The currently supported options are "attempts", "debug", "edns0", "inet6",
"ip6-bytestring", "ip6-dotint", "ndots", "no-check-names", "no-ip6-dotint",
"no-reload", "no-tld-query", "rotate", "single-request", "single-request-reopen",
"timeout", "trust-ad", "use-vc".

The "trust-ad" setting is only honored if the profile contributes name servers to
resolv.conf, and if all contributing profiles have "trust-ad" enabled.

When using a caching DNS plugin (dnsmasq or systemd-resolved in NetworkManager.conf)
then "edns0" and "trust-ad" are automatically added.

Format: array of string

dns-priority
DNS servers priority.

The relative priority for DNS servers specified by this setting. A lower numerical
value is better (higher priority).

Negative values have the special effect of excluding other configurations with a
greater numerical priority value; so in presence of at least one negative priority,
only DNS servers from connections with the lowest priority value will be used. To
avoid all DNS leaks, set the priority of the profile that should be used to the most
negative value of all active connections profiles.

Zero selects a globally configured default value. If the latter is missing or zero
too, it defaults to 50 for VPNs (including WireGuard) and 100 for other connections.

Note that the priority is to order DNS settings for multiple active connections. It
does not disambiguate multiple DNS servers within the same connection profile.

When multiple devices have configurations with the same priority, VPNs will be
considered first, then devices with the best (lowest metric) default route and then
all other devices.

When using dns=default, servers with higher priority will be on top of resolv.conf. To
prioritize a given server over another one within the same connection, just specify
them in the desired order. Note that commonly the resolver tries name servers in
/etc/resolv.conf in the order listed, proceeding with the next server in the list on
failure. See for example the "rotate" option of the dns-options setting. If there are
any negative DNS priorities, then only name servers from the devices with that lowest
priority will be considered.

When using a DNS resolver that supports Conditional Forwarding or Split DNS (with
dns=dnsmasq or dns=systemd-resolved settings), each connection is used to query
domains in its search list. The search domains determine which name servers to ask,
and the DNS priority is used to prioritize name servers based on the domain. Queries
for domains not present in any search list are routed through connections having the
'~.' special wildcard domain, which is added automatically to connections with the
default route (or can be added manually). When multiple connections specify the same
domain, the one with the best priority (lowest numerical value) wins. If a sub domain
is configured on another interface it will be accepted regardless the priority, unless
parent domain on the other interface has a negative priority, which causes the sub
domain to be shadowed. With Split DNS one can avoid undesired DNS leaks by properly
configuring DNS priorities and the search domains, so that only name servers of the
desired interface are configured.

Format: int32

dns-search
List of DNS search domains. Domains starting with a tilde ('~') are considered
'routing' domains and are used only to decide the interface over which a query must be
forwarded; they are not used to complete unqualified host names.

When using a DNS plugin that supports Conditional Forwarding or Split DNS, then the
search domains specify which name servers to query. This makes the behavior different
from running with plain /etc/resolv.conf. For more information see also the
dns-priority setting.

When set on a profile that also enabled DHCP, the DNS search list received
automatically (option 119 for DHCPv4 and option 24 for DHCPv6) gets merged with the
manual list. This can be prevented by setting "ignore-auto-dns". Note that if no DNS
searches are configured, the fallback will be derived from the domain from DHCP
(option 15).

Format: array of string

gateway
Alias: gw4

The gateway associated with this configuration. This is only meaningful if "addresses"
is also set.

Setting the gateway causes NetworkManager to configure a standard default route with
the gateway as next hop. This is ignored if "never-default" is set. An alternative is
to configure the default route explicitly with a manual route and /0 as prefix length.

Note that the gateway usually conflicts with routing that NetworkManager configures
for WireGuard interfaces, so usually it should not be set in that case. See
"ip4-auto-default-route".

Format: string

ignore-auto-dns
When "method" is set to "auto" and this property to TRUE, automatically configured
name servers and search domains are ignored and only name servers and search domains
specified in the "dns" and "dns-search" properties, if any, are used.

Format: boolean

ignore-auto-routes
When "method" is set to "auto" and this property to TRUE, automatically configured
routes are ignored and only routes specified in the "routes" property, if any, are
used.

Format: boolean

link-local
Enable and disable the IPv4 link-local configuration independently of the ipv4.method
configuration. This allows a link-local address (169.254.x.y/16) to be obtained in
addition to other addresses, such as those manually configured or obtained from a DHCP
server.

When set to "auto", the value is dependent on "ipv4.method". When set to "default", it
honors the global connection default, before falling back to "auto". Note that if
"ipv4.method" is "disabled", then link local addressing is always disabled too. The
default is "default".

Since 1.40

Format: int32

may-fail
If TRUE, allow overall network configuration to proceed even if the configuration
specified by this property times out. Note that at least one IP configuration must
succeed or overall network configuration will still fail. For example, in IPv6-only
networks, setting this property to TRUE on the NMSettingIP4Config allows the overall
network configuration to succeed if IPv4 configuration fails but IPv6 configuration
completes successfully.

Format: boolean

method
IP configuration method.

NMSettingIP4Config and NMSettingIP6Config both support "disabled", "auto", "manual",
and "link-local". See the subclass-specific documentation for other values.

In general, for the "auto" method, properties such as "dns" and "routes" specify
information that is added on to the information returned from automatic configuration.
The "ignore-auto-routes" and "ignore-auto-dns" properties modify this behavior.

For methods that imply no upstream network, such as "shared" or "link-local", these
properties must be empty.

For IPv4 method "shared", the IP subnet can be configured by adding one manual IPv4
address or otherwise 10.42.x.0/24 is chosen. Note that the shared method must be
configured on the interface which shares the internet to a subnet, not on the uplink
which is shared.

Format: string

never-default
If TRUE, this connection will never be the default connection for this IP type,
meaning it will never be assigned the default route by NetworkManager.

Format: boolean

required-timeout
The minimum time interval in milliseconds for which dynamic IP configuration should be
tried before the connection succeeds.

This property is useful for example if both IPv4 and IPv6 are enabled and are allowed
to fail. Normally the connection succeeds as soon as one of the two address families
completes; by setting a required timeout for e.g. IPv4, one can ensure that even if
IP6 succeeds earlier than IPv4, NetworkManager waits some time for IPv4 before the
connection becomes active.

Note that if "may-fail" is FALSE for the same address family, this property has no
effect as NetworkManager needs to wait for the full DHCP timeout.

A zero value means that no required timeout is present, -1 means the default value
(either configuration ipvx.required-timeout override or zero).

Format: int32

route-metric
The default metric for routes that don't explicitly specify a metric. The default
value -1 means that the metric is chosen automatically based on the device type. The
metric applies to dynamic routes, manual (static) routes that don't have an explicit
metric setting, address prefix routes, and the default route. Note that for IPv6, the
kernel accepts zero (0) but coerces it to 1024 (user default). Hence, setting this
property to zero effectively mean setting it to 1024. For IPv4, zero is a regular
value for the metric.

Format: int64

route-table
Enable policy routing (source routing) and set the routing table used when adding
routes.

This affects all routes, including device-routes, IPv4LL, DHCP, SLAAC, default-routes
and static routes. But note that static routes can individually overwrite the setting
by explicitly specifying a non-zero routing table.

If the table setting is left at zero, it is eligible to be overwritten via global
configuration. If the property is zero even after applying the global configuration
value, policy routing is disabled for the address family of this connection.

Policy routing disabled means that NetworkManager will add all routes to the main
table (except static routes that explicitly configure a different table).
Additionally, NetworkManager will not delete any extraneous routes from tables except
the main table. This is to preserve backward compatibility for users who manage
routing tables outside of NetworkManager.

Format: uint32

routes
A list of IPv4 destination addresses, prefix length, optional IPv4 next hop addresses,
optional route metric, optional attribute. The valid syntax is: "ip[/prefix]
[next-hop] [metric] [attribute=val]...[,ip[/prefix]...]". For example "192.0.2.0/24
10.1.1.1 77, 198.51.100.0/24".

Various attributes are supported:

• "advmss" - an unsigned 32 bit integer.

• "cwnd" - an unsigned 32 bit integer.

• "initcwnd" - an unsigned 32 bit integer.

• "initrwnd" - an unsigned 32 bit integer.

• "lock-advmss" - a boolean value.

• "lock-cwnd" - a boolean value.

• "lock-initcwnd" - a boolean value.

• "lock-initrwnd" - a boolean value.

• "lock-mtu" - a boolean value.

• "lock-window" - a boolean value.

• "mtu" - an unsigned 32 bit integer.

• "onlink" - a boolean value.

• "quickack" - a boolean value.

• "rto_min" - an unsigned 32 bit integer. The value is in milliseconds.

• "scope" - an unsigned 8 bit integer. IPv4 only.

• "src" - an IPv4 address.

• "table" - an unsigned 32 bit integer. The default depends on ipv4.route-table.

• "tos" - an unsigned 8 bit integer. IPv4 only.

• "type" - one of unicast, local, blackhole, unavailable, prohibit, throw. The
default is unicast.

• "window" - an unsigned 32 bit integer.

For details see also `man ip-route`.

Format: a comma separated list of routes

routing-rules
A comma separated list of routing rules for policy routing. The format is based on ip
rule add syntax and mostly compatible. One difference is that routing rules in
NetworkManager always need a fixed priority.

Example: priority 5 from 192.167.4.0/24 table 45

Format: a comma separated list of routing rules

ipv6 setting
IPv6 Settings.

Properties:

addr-gen-mode
Configure method for creating the address for use with RFC4862 IPv6 Stateless Address
Autoconfiguration. The permitted values are: NM_SETTING_IP6_CONFIG_ADDR_GEN_MODE_EUI64
(0), NM_SETTING_IP6_CONFIG_ADDR_GEN_MODE_STABLE_PRIVACY (1).
NM_SETTING_IP6_CONFIG_ADDR_GEN_MODE_DEFAULT_OR_EUI64 (2) or
NM_SETTING_IP6_CONFIG_ADDR_GEN_MODE_DEFAULT (3).

If the property is set to EUI64, the addresses will be generated using the interface
tokens derived from hardware address. This makes the host part of the address to stay
constant, making it possible to track host's presence when it changes networks. The
address changes when the interface hardware is replaced.

The value of stable-privacy enables use of cryptographically secure hash of a secret
host-specific key along with the connection's stable-id and the network address as
specified by RFC7217. This makes it impossible to use the address track host's
presence, and makes the address stable when the network interface hardware is
replaced.

The special values "default" and "default-or-eui64" will fallback to the global
connection default in as documented in NetworkManager.conf(5) manual. If the global
default is not specified, the fallback value is "stable-privacy" or "eui64",
respectively.

For libnm, the property defaults to "default" since 1.40. Previously it defaulted to
"stable-privacy". On D-Bus, the absence of an addr-gen-mode setting equals "default".
For keyfile plugin, the absence of the setting on disk means "default-or-eui64" so
that the property doesn't change on upgrade from older versions.

Note that this setting is distinct from the Privacy Extensions as configured by
"ip6-privacy" property and it does not affect the temporary addresses configured with
this option.

Format: int32

addresses
Alias: ip6

Array of IP addresses.

Format: a comma separated list of addresses

dhcp-duid
A string containing the DHCPv6 Unique Identifier (DUID) used by the dhcp client to
identify itself to DHCPv6 servers (RFC 3315). The DUID is carried in the Client
Identifier option. If the property is a hex string ('aa:bb:cc') it is interpreted as a
binary DUID and filled as an opaque value in the Client Identifier option.

The special value "lease" will retrieve the DUID previously used from the lease file
belonging to the connection. If no DUID is found and "dhclient" is the configured dhcp
client, the DUID is searched in the system-wide dhclient lease file. If still no DUID
is found, or another dhcp client is used, a global and permanent DUID-UUID (RFC 6355)
will be generated based on the machine-id.

The special values "llt" and "ll" will generate a DUID of type LLT or LL (see RFC
3315) based on the current MAC address of the device. In order to try providing a
stable DUID-LLT, the time field will contain a constant timestamp that is used
globally (for all profiles) and persisted to disk.

The special values "stable-llt", "stable-ll" and "stable-uuid" will generate a DUID of
the corresponding type, derived from the connection's stable-id and a per-host unique
key. You may want to include the "${DEVICE}" or "${MAC}" specifier in the stable-id,
in case this profile gets activated on multiple devices. So, the link-layer address of
"stable-ll" and "stable-llt" will be a generated address derived from the stable id.
The DUID-LLT time value in the "stable-llt" option will be picked among a static
timespan of three years (the upper bound of the interval is the same constant
timestamp used in "llt").

When the property is unset, the global value provided for "ipv6.dhcp-duid" is used. If
no global value is provided, the default "lease" value is assumed.

Format: string

dhcp-hostname-flags
Flags for the DHCP hostname and FQDN.

Format: uint32

Format: string

Format: boolean

dhcp-timeout
A timeout for a DHCP transaction in seconds. If zero (the default), a globally
configured default is used. If still unspecified, a device specific timeout is used
(usually 45 seconds).

Set to 2147483647 (MAXINT32) for infinity.

Format: int32

dns
Array of IP addresses of DNS servers.

Format: array of byte array

dns-options
Array of DNS options as described in man 5 resolv.conf.

NULL means that the options are unset and left at the default. In this case
NetworkManager will use default options. This is distinct from an empty list of
properties.

The "trust-ad" setting is only honored if the profile contributes name servers to
resolv.conf, and if all contributing profiles have "trust-ad" enabled.

When using a caching DNS plugin (dnsmasq or systemd-resolved in NetworkManager.conf)
then "edns0" and "trust-ad" are automatically added.

Format: array of string

dns-priority
DNS servers priority.

The relative priority for DNS servers specified by this setting. A lower numerical
value is better (higher priority).

Zero selects a globally configured default value. If the latter is missing or zero
too, it defaults to 50 for VPNs (including WireGuard) and 100 for other connections.

Note that the priority is to order DNS settings for multiple active connections. It
does not disambiguate multiple DNS servers within the same connection profile.

When multiple devices have configurations with the same priority, VPNs will be
considered first, then devices with the best (lowest metric) default route and then
all other devices.

Format: int32

Format: array of string

gateway
Alias: gw6

The gateway associated with this configuration. This is only meaningful if "addresses"
is also set.

Note that the gateway usually conflicts with routing that NetworkManager configures
for WireGuard interfaces, so usually it should not be set in that case. See
"ip4-auto-default-route".

Format: string

Format: boolean

ignore-auto-routes
When "method" is set to "auto" and this property to TRUE, automatically configured
routes are ignored and only routes specified in the "routes" property, if any, are
used.

Format: boolean

ip6-privacy
Configure IPv6 Privacy Extensions for SLAAC, described in RFC4941. If enabled, it
makes the kernel generate a temporary IPv6 address in addition to the public one
generated from MAC address via modified EUI-64. This enhances privacy, but could cause
problems in some applications, on the other hand. The permitted values are: -1:
unknown, 0: disabled, 1: enabled (prefer public address), 2: enabled (prefer temporary
addresses).

Having a per-connection setting set to "-1" (unknown) means fallback to global
configuration "ipv6.ip6-privacy".

If also global configuration is unspecified or set to "-1", fallback to read
"/proc/sys/net/ipv6/conf/default/use_tempaddr".

Note that this setting is distinct from the Stable Privacy addresses that can be
enabled with the "addr-gen-mode" property's "stable-privacy" setting as another way of
avoiding host tracking with IPv6 addresses.

Format: NMSettingIP6ConfigPrivacy (int32)

Format: boolean

method
IP configuration method.

NMSettingIP4Config and NMSettingIP6Config both support "disabled", "auto", "manual",
and "link-local". See the subclass-specific documentation for other values.

For methods that imply no upstream network, such as "shared" or "link-local", these
properties must be empty.

Format: string

mtu
Maximum transmission unit size, in bytes. If zero (the default), the MTU is set
automatically from router advertisements or is left equal to the link-layer MTU. If
greater than the link-layer MTU, or greater than zero but less than the minimum IPv6
MTU of 1280, this value has no effect.

Format: uint32

never-default
If TRUE, this connection will never be the default connection for this IP type,
meaning it will never be assigned the default route by NetworkManager.

Format: boolean

ra-timeout
A timeout for waiting Router Advertisements in seconds. If zero (the default), a
globally configured default is used. If still unspecified, the timeout depends on the
sysctl settings of the device.

Set to 2147483647 (MAXINT32) for infinity.

Format: int32

required-timeout
The minimum time interval in milliseconds for which dynamic IP configuration should be
tried before the connection succeeds.

Note that if "may-fail" is FALSE for the same address family, this property has no
effect as NetworkManager needs to wait for the full DHCP timeout.

A zero value means that no required timeout is present, -1 means the default value
(either configuration ipvx.required-timeout override or zero).

Format: int32

Format: int64

route-table
Enable policy routing (source routing) and set the routing table used when adding
routes.

Format: uint32

routes
A list of IPv6 destination addresses, prefix length, optional IPv6 next hop addresses,
optional route metric, optional attribute. The valid syntax is: "ip[/prefix]
[next-hop] [metric] [attribute=val]...[,ip[/prefix]...]".

Various attributes are supported:

• "advmss" - an unsigned 32 bit integer.

• "cwnd" - an unsigned 32 bit integer.

• "from" - an IPv6 address with optional prefix. IPv6 only.

• "initcwnd" - an unsigned 32 bit integer.

• "initrwnd" - an unsigned 32 bit integer.

• "lock-advmss" - a boolean value.

• "lock-cwnd" - a boolean value.

• "lock-initcwnd" - a boolean value.

• "lock-initrwnd" - a boolean value.

• "lock-mtu" - a boolean value.

• "lock-window" - a boolean value.

• "mtu" - an unsigned 32 bit integer.

• "onlink" - a boolean value.

• "quickack" - a boolean value.

• "rto_min" - an unsigned 32 bit integer. The value is in milliseconds.

• "src" - an IPv6 address.

• "table" - an unsigned 32 bit integer. The default depends on ipv6.route-table.

• "type" - one of unicast, local, blackhole, unavailable, prohibit, throw. The
default is unicast.

• "window" - an unsigned 32 bit integer.

For details see also `man ip-route`.

Format: a comma separated list of routes

Example: priority 5 from 1:2:3::5/128 table 45

Format: a comma separated list of routing rules

token
Configure the token for draft-chown-6man-tokenised-ipv6-identifiers-02 IPv6 tokenized
interface identifiers. Useful with eui64 addr-gen-mode.

Format: string

ip-tunnel setting
IP Tunneling Settings.

Properties:

encapsulation-limit
How many additional levels of encapsulation are permitted to be prepended to packets.
This property applies only to IPv6 tunnels.

Format: uint32

flags
Tunnel flags. Currently, the following values are supported:
NM_IP_TUNNEL_FLAG_IP6_IGN_ENCAP_LIMIT (0x1), NM_IP_TUNNEL_FLAG_IP6_USE_ORIG_TCLASS
(0x2), NM_IP_TUNNEL_FLAG_IP6_USE_ORIG_FLOWLABEL (0x4), NM_IP_TUNNEL_FLAG_IP6_MIP6_DEV
(0x8), NM_IP_TUNNEL_FLAG_IP6_RCV_DSCP_COPY (0x10),
NM_IP_TUNNEL_FLAG_IP6_USE_ORIG_FWMARK (0x20). They are valid only for IPv6 tunnels.

Format: uint32

flow-label
The flow label to assign to tunnel packets. This property applies only to IPv6
tunnels.

Format: uint32

input-key
The key used for tunnel input packets; the property is valid only for certain tunnel
modes (GRE, IP6GRE). If empty, no key is used.

Format: string

local
Alias: local

The local endpoint of the tunnel; the value can be empty, otherwise it must contain an
IPv4 or IPv6 address.

Format: string

mode
Alias: mode

The tunneling mode, for example NM_IP_TUNNEL_MODE_IPIP (1) or NM_IP_TUNNEL_MODE_GRE
(2).

Format: uint32

mtu
If non-zero, only transmit packets of the specified size or smaller, breaking larger
packets up into multiple fragments.

Format: uint32

output-key
The key used for tunnel output packets; the property is valid only for certain tunnel
modes (GRE, IP6GRE). If empty, no key is used.

Format: string

parent
Alias: dev

If given, specifies the parent interface name or parent connection UUID the new device
will be bound to so that tunneled packets will only be routed via that interface.

Format: string

path-mtu-discovery
Whether to enable Path MTU Discovery on this tunnel.

Format: boolean

remote
Alias: remote

The remote endpoint of the tunnel; the value must contain an IPv4 or IPv6 address.

Format: string

tos
The type of service (IPv4) or traffic class (IPv6) field to be set on tunneled
packets.

Format: uint32

ttl
The TTL to assign to tunneled packets. 0 is a special value meaning that packets
inherit the TTL value.

Format: uint32

macsec setting
MACSec Settings.

Properties:

encrypt
Alias: encrypt

Whether the transmitted traffic must be encrypted.

Format: boolean

mka-cak
Alias: cak

The pre-shared CAK (Connectivity Association Key) for MACsec Key Agreement.

Format: string

mka-cak-flags
Flags indicating how to handle the "mka-cak" property.

Format: NMSettingSecretFlags (uint32)

mka-ckn
Alias: ckn

The pre-shared CKN (Connectivity-association Key Name) for MACsec Key Agreement.

Format: string

mode
Alias: mode

Specifies how the CAK (Connectivity Association Key) for MKA (MACsec Key Agreement) is
obtained.

Format: int32

parent
Alias: dev

If given, specifies the parent interface name or parent connection UUID from which
this MACSEC interface should be created. If this property is not specified, the
connection must contain an "802-3-ethernet" setting with a "mac-address" property.

Format: string

port
Alias: port

The port component of the SCI (Secure Channel Identifier), between 1 and 65534.

Format: int32

send-sci
Specifies whether the SCI (Secure Channel Identifier) is included in every packet.

Format: boolean

validation
Specifies the validation mode for incoming frames.

Format: int32

macvlan setting
MAC VLAN Settings.

Properties:

mode
Alias: mode

The macvlan mode, which specifies the communication mechanism between multiple
macvlans on the same lower device.

Format: uint32

parent
Alias: dev

If given, specifies the parent interface name or parent connection UUID from which
this MAC-VLAN interface should be created. If this property is not specified, the
connection must contain an "802-3-ethernet" setting with a "mac-address" property.

Format: string

promiscuous
Whether the interface should be put in promiscuous mode.

Format: boolean

tap
Alias: tap

Whether the interface should be a MACVTAP.

Format: boolean

match setting
Match settings.

Properties:

driver
A list of driver names to match. Each element is a shell wildcard pattern.

See NMSettingMatch:interface-name for how special characters '|', '&', '!' and '\\'
are used for optional and mandatory matches and inverting the pattern.

Format: array of string

interface-name
A list of interface names to match. Each element is a shell wildcard pattern.

An element can be prefixed with a pipe symbol (|) or an ampersand (&). The former
means that the element is optional and the latter means that it is mandatory. If there
are any optional elements, than the match evaluates to true if at least one of the
optional element matches (logical OR). If there are any mandatory elements, then they
all must match (logical AND). By default, an element is optional. This means that an
element "foo" behaves the same as "|foo". An element can also be inverted with
exclamation mark (!) between the pipe symbol (or the ampersand) and before the
pattern. Note that "!foo" is a shortcut for the mandatory match "&!foo". Finally, a
backslash can be used at the beginning of the element (after the optional special
characters) to escape the start of the pattern. For example, "&\\!a" is an mandatory
match for literally "!a".

Format: array of string

kernel-command-line
A list of kernel command line arguments to match. This may be used to check whether a
specific kernel command line option is set (or unset, if prefixed with the exclamation
mark). The argument must either be a single word, or an assignment (i.e. two words,
joined by "="). In the former case the kernel command line is searched for the word
appearing as is, or as left hand side of an assignment. In the latter case, the exact
assignment is looked for with right and left hand side matching. Wildcard patterns are
not supported.

See NMSettingMatch:interface-name for how special characters '|', '&', '!' and '\\'
are used for optional and mandatory matches and inverting the match.

Format: array of string

path
A list of paths to match against the ID_PATH udev property of devices. ID_PATH
represents the topological persistent path of a device. It typically contains a
subsystem string (pci, usb, platform, etc.) and a subsystem-specific identifier.

For PCI devices the path has the form "pci-$domain:$bus:$device.$function", where each
variable is an hexadecimal value; for example "pci-0000:0a:00.0".

The path of a device can be obtained with "udevadm info /sys/class/net/$dev | grep
ID_PATH=" or by looking at the "path" property exported by NetworkManager ("nmcli -f
general.path device show $dev").

Each element of the list is a shell wildcard pattern.

See NMSettingMatch:interface-name for how special characters '|', '&', '!' and '\\'
are used for optional and mandatory matches and inverting the pattern.

Format: array of string

802-11-olpc-mesh setting
Alias: olpc-mesh

OLPC Wireless Mesh Settings.

Properties:

channel
Alias: channel

Channel on which the mesh network to join is located.

Format: uint32

dhcp-anycast-address
Alias: dhcp-anycast

Anycast DHCP MAC address used when requesting an IP address via DHCP. The specific
anycast address used determines which DHCP server class answers the request.

This is currently only implemented by dhclient DHCP plugin.

Format: byte array

ssid
Alias: ssid

SSID of the mesh network to join.

Format: byte array

ovs-bridge setting
OvsBridge Link Settings.

Properties:

datapath-type
The data path type. One of "system", "netdev" or empty.

Format: string

fail-mode
The bridge failure mode. One of "secure", "standalone" or empty.

Format: string

mcast-snooping-enable
Enable or disable multicast snooping.

Format: boolean

rstp-enable
Enable or disable RSTP.

Format: boolean

stp-enable
Enable or disable STP.

Format: boolean

ovs-dpdk setting
OvsDpdk Link Settings.

Properties:

devargs
Open vSwitch DPDK device arguments.

Format: string

n-rxq
Open vSwitch DPDK number of rx queues. Defaults to zero which means to leave the
parameter in OVS unspecified and effectively configures one queue.

Format: uint32

ovs-interface setting
Open vSwitch Interface Settings.

Properties:

type
The interface type. Either "internal", "system", "patch", "dpdk", or empty.

Format: string

ovs-patch setting
OvsPatch Link Settings.

Properties:

peer
Specifies the name of the interface for the other side of the patch. The patch on the
other side must also set this interface as peer.

Format: string

ovs-port setting
OvsPort Link Settings.

Properties:

bond-downdelay
The time port must be inactive in order to be considered down.

Format: uint32

bond-mode
Bonding mode. One of "active-backup", "balance-slb", or "balance-tcp".

Format: string

bond-updelay
The time port must be active before it starts forwarding traffic.

Format: uint32

lacp
LACP mode. One of "active", "off", or "passive".

Format: string

tag
The VLAN tag in the range 0-4095.

Format: uint32

vlan-mode
The VLAN mode. One of "access", "native-tagged", "native-untagged", "trunk" or unset.

Format: string

ppp setting
Point-to-Point Protocol Settings.

Properties:

baud
If non-zero, instruct pppd to set the serial port to the specified baudrate. This
value should normally be left as 0 to automatically choose the speed.

Format: uint32

crtscts
If TRUE, specify that pppd should set the serial port to use hardware flow control
with RTS and CTS signals. This value should normally be set to FALSE.

Format: boolean

lcp-echo-failure
If non-zero, instruct pppd to presume the connection to the peer has failed if the
specified number of LCP echo-requests go unanswered by the peer. The
"lcp-echo-interval" property must also be set to a non-zero value if this property is
used.

Format: uint32

lcp-echo-interval
If non-zero, instruct pppd to send an LCP echo-request frame to the peer every n
seconds (where n is the specified value). Note that some PPP peers will respond to
echo requests and some will not, and it is not possible to autodetect this.

Format: uint32

mppe-stateful
If TRUE, stateful MPPE is used. See pppd documentation for more information on
stateful MPPE.

Format: boolean

mru
If non-zero, instruct pppd to request that the peer send packets no larger than the
specified size. If non-zero, the MRU should be between 128 and 16384.

Format: uint32

mtu
If non-zero, instruct pppd to send packets no larger than the specified size.

Format: uint32

no-vj-comp
If TRUE, Van Jacobsen TCP header compression will not be requested.

Format: boolean

noauth
If TRUE, do not require the other side (usually the PPP server) to authenticate itself
to the client. If FALSE, require authentication from the remote side. In almost all
cases, this should be TRUE.

Format: boolean

nobsdcomp
If TRUE, BSD compression will not be requested.

Format: boolean

nodeflate
If TRUE, "deflate" compression will not be requested.

Format: boolean

refuse-chap
If TRUE, the CHAP authentication method will not be used.

Format: boolean

refuse-eap
If TRUE, the EAP authentication method will not be used.

Format: boolean

refuse-mschap
If TRUE, the MSCHAP authentication method will not be used.

Format: boolean

refuse-mschapv2
If TRUE, the MSCHAPv2 authentication method will not be used.

Format: boolean

refuse-pap
If TRUE, the PAP authentication method will not be used.

Format: boolean

require-mppe
If TRUE, MPPE (Microsoft Point-to-Point Encryption) will be required for the PPP
session. If either 64-bit or 128-bit MPPE is not available the session will fail. Note
that MPPE is not used on mobile broadband connections.

Format: boolean

require-mppe-128
If TRUE, 128-bit MPPE (Microsoft Point-to-Point Encryption) will be required for the
PPP session, and the "require-mppe" property must also be set to TRUE. If 128-bit MPPE
is not available the session will fail.

Format: boolean

pppoe setting
PPP-over-Ethernet Settings.

Properties:

parent
Alias: parent

If given, specifies the parent interface name on which this PPPoE connection should be
created. If this property is not specified, the connection is activated on the
interface specified in "interface-name" of NMSettingConnection.

Format: string

password
Alias: password

Password used to authenticate with the PPPoE service.

Format: string

password-flags
Flags indicating how to handle the "password" property.

Format: NMSettingSecretFlags (uint32)

service
Alias: service

If specified, instruct PPPoE to only initiate sessions with access concentrators that
provide the specified service. For most providers, this should be left blank. It is
only required if there are multiple access concentrators or a specific service is
known to be required.

Format: string

username
Alias: username

Username used to authenticate with the PPPoE service.

Format: string

proxy setting
WWW Proxy Settings.

Properties:

browser-only
Alias: browser-only

Whether the proxy configuration is for browser only.

Format: boolean

method
Alias: method

Method for proxy configuration, Default is NM_SETTING_PROXY_METHOD_NONE (0)

Format: int32

pac-script
Alias: pac-script

PAC script for the connection. This is an UTF-8 encoded javascript code that defines a
FindProxyForURL() function.

Format: string

pac-url
Alias: pac-url

PAC URL for obtaining PAC file.

Format: string

serial setting
Serial Link Settings.

Properties:

baud
Speed to use for communication over the serial port. Note that this value usually has
no effect for mobile broadband modems as they generally ignore speed settings and use
the highest available speed.

Format: uint32

bits
Byte-width of the serial communication. The 8 in "8n1" for example.

Format: uint32

parity
Parity setting of the serial port.

Format: NMSettingSerialParity (byte)

send-delay
Time to delay between each byte sent to the modem, in microseconds.

Format: uint64

stopbits
Number of stop bits for communication on the serial port. Either 1 or 2. The 1 in
"8n1" for example.

Format: uint32

sriov setting
SR-IOV settings.

Properties:

autoprobe-drivers
Whether to autoprobe virtual functions by a compatible driver.

If set to NM_TERNARY_TRUE (1), the kernel will try to bind VFs to a compatible driver
and if this succeeds a new network interface will be instantiated for each VF.

If set to NM_TERNARY_FALSE (0), VFs will not be claimed and no network interfaces will
be created for them.

When set to NM_TERNARY_DEFAULT (-1), the global default is used; in case the global
default is unspecified it is assumed to be NM_TERNARY_TRUE (1).

Format: NMTernary (int32)

total-vfs
The total number of virtual functions to create.

Note that when the sriov setting is present NetworkManager enforces the number of
virtual functions on the interface (also when it is zero) during activation and resets
it upon deactivation. To prevent any changes to SR-IOV parameters don't add a sriov
setting to the connection.

Format: uint32

vfs
Array of virtual function descriptors.

Each VF descriptor is a dictionary mapping attribute names to GVariant values. The
'index' entry is mandatory for each VF.

When represented as string a VF is in the form:

"INDEX [ATTR=VALUE[ ATTR=VALUE]...]".

for example:

"2 mac=00:11:22:33:44:55 spoof-check=true".

Multiple VFs can be specified using a comma as separator. Currently, the following
attributes are supported: mac, spoof-check, trust, min-tx-rate, max-tx-rate, vlans.

The "vlans" attribute is represented as a semicolon-separated list of VLAN
descriptors, where each descriptor has the form

"ID[.PRIORITY[.PROTO]]".

PROTO can be either 'q' for 802.1Q (the default) or 'ad' for 802.1ad.

Format: array of vardict

tc setting
Linux Traffic Control Settings.

Properties:

qdiscs
Array of TC queueing disciplines. qdisc is a basic block in the Linux traffic control
subsystem

Each qdisc can be specified by the following attributes:

handle HANDLE
specifies the qdisc handle. A qdisc, which potentially can have children, gets
assigned a major number, called a 'handle', leaving the minor number namespace
available for classes. The handle is expressed as '10:'. It is customary to
explicitly assign a handle to qdiscs expected to have children.

parent HANDLE
specifies the handle of the parent qdisc the current qdisc must be attached to.

root
specifies that the qdisc is attached to the root of device.

KIND
this is the qdisc kind. NetworkManager currently supports the following kinds:
fq_codel, sfq, tbf. Each qdisc kind has a different set of parameters, described
below. There are also some kinds like pfifo, pfifo_fast, prio supported by
NetworkManager but their parameters are not supported by NetworkManager.

Parameters for 'fq_codel':

limit U32
the hard limit on the real queue size. When this limit is reached, incoming
packets are dropped. Default is 10240 packets.

memory_limit U32
sets a limit on the total number of bytes that can be queued in this FQ-CoDel
instance. The lower of the packet limit of the limit parameter and the memory
limit will be enforced. Default is 32 MB.

flows U32
the number of flows into which the incoming packets are classified. Due to the
stochastic nature of hashing, multiple flows may end up being hashed into the same
slot. Newer flows have priority over older ones. This parameter can be set only at
load time since memory has to be allocated for the hash table. Default value is
1024.

target U32
the acceptable minimum standing/persistent queue delay. This minimum delay is
identified by tracking the local minimum queue delay that packets experience. The
unit of measurement is microsecond(us). Default value is 5ms.

interval U32
used to ensure that the measured minimum delay does not become too stale. The
minimum delay must be experienced in the last epoch of length .B interval. It
should be set on the order of the worst-case RTT through the bottleneck to give
endpoints sufficient time to react. Default value is 100ms.

quantum U32
the number of bytes used as 'deficit' in the fair queuing algorithm. Default is
set to 1514 bytes which corresponds to the Ethernet MTU plus the hardware header
length of 14 bytes.

ecn BOOL
can be used to mark packets instead of dropping them. ecn is turned on by default.

ce_threshold U32
sets a threshold above which all packets are marked with ECN Congestion
Experienced. This is useful for DCTCP-style congestion control algorithms that
require marking at very shallow queueing thresholds.

Parameters for 'sfq':

divisor U32
can be used to set a different hash table size, available from kernel 2.6.39
onwards. The specified divisor must be a power of two and cannot be larger than
65536. Default value: 1024.

limit U32
Upper limit of the SFQ. Can be used to reduce the default length of 127 packets.

depth U32
Limit of packets per flow. Default to 127 and can be lowered.

perturb_period U32
Interval in seconds for queue algorithm perturbation. Defaults to 0, which means
that no perturbation occurs. Do not set too low for each perturbation may cause
some packet reordering or losses. Advised value: 60 This value has no effect when
external flow classification is used. Its better to increase divisor value to
lower risk of hash collisions.

quantum U32
Amount of bytes a flow is allowed to dequeue during a round of the round robin
process. Defaults to the MTU of the interface which is also the advised value and
the minimum value.

flows U32
Default value is 127.

Parameters for 'tbf':

rate U64
Bandwidth or rate. These parameters accept a floating point number, possibly
followed by either a unit (both SI and IEC units supported), or a float followed
by a percent character to specify the rate as a percentage of the device's speed.

burst U32
Also known as buffer or maxburst. Size of the bucket, in bytes. This is the
maximum amount of bytes that tokens can be available for instantaneously. In
general, larger shaping rates require a larger buffer. For 10mbit/s on Intel, you
need at least 10kbyte buffer if you want to reach your configured rate!

If your buffer is too small, packets may be dropped because more tokens arrive per
timer tick than fit in your bucket. The minimum buffer size can be calculated by
dividing the rate by HZ.

Token usage calculations are performed using a table which by default has a
resolution of 8 packets. This resolution can be changed by specifying the cell
size with the burst. For example, to specify a 6000 byte buffer with a 16 byte
cell size, set a burst of 6000/16. You will probably never have to set this. Must
be an integral power of 2.

limit U32
Limit is the number of bytes that can be queued waiting for tokens to become
available.

latency U32
specifies the maximum amount of time a packet can sit in the TBF. The latency
calculation takes into account the size of the bucket, the rate and possibly the
peakrate (if set). The latency and limit are mutually exclusive.

Format: GPtrArray(NMTCQdisc)

tfilters
Array of TC traffic filters. Traffic control can manage the packet content during
classification by using filters.

Each tfilters can be specified by the following attributes:

handle HANDLE
specifies the tfilters handle. A filter is used by a classful qdisc to determine
in which class a packet will be enqueued. It is important to notice that filters
reside within qdiscs. Therefore, see qdiscs handle for detailed information.

parent HANDLE
specifies the handle of the parent qdisc the current qdisc must be attached to.

root
specifies that the qdisc is attached to the root of device.

KIND
this is the tfilters kind. NetworkManager currently supports following kinds:
mirred, simple. Each filter kind has a different set of actions, described below.
There are also some other kinds like matchall, basic, u32 supported by
NetworkManager.

Actions for 'mirred':

egress bool
Define whether the packet should exit from the interface.

ingress bool
Define whether the packet should come into the interface.

mirror bool
Define whether the packet should be copied to the destination space.

redirect bool
Define whether the packet should be moved to the destination space.

Action for 'simple':

sdata char[32]
The actual string to print.

Format: GPtrArray(NMTCTfilter)

team setting
Teaming Settings.

Properties:

config
Alias: config

The JSON configuration for the team network interface. The property should contain raw
JSON configuration data suitable for teamd, because the value is passed directly to
teamd. If not specified, the default configuration is used. See man teamd.conf for the
format details.

Format: string

link-watchers
Link watchers configuration for the connection: each link watcher is defined by a
dictionary, whose keys depend upon the selected link watcher. Available link watchers
are 'ethtool', 'nsna_ping' and 'arp_ping' and it is specified in the dictionary with
the key 'name'. Available keys are: ethtool: 'delay-up', 'delay-down', 'init-wait';
nsna_ping: 'init-wait', 'interval', 'missed-max', 'target-host'; arp_ping: all the
ones in nsna_ping and 'source-host', 'validate-active', 'validate-inactive',
'send-always'. See teamd.conf man for more details.

Format: array of vardict

mcast-rejoin-count
Corresponds to the teamd mcast_rejoin.count.

Format: int32

mcast-rejoin-interval
Corresponds to the teamd mcast_rejoin.interval.

Format: int32

notify-peers-count
Corresponds to the teamd notify_peers.count.

Format: int32

notify-peers-interval
Corresponds to the teamd notify_peers.interval.

Format: int32

runner
Corresponds to the teamd runner.name. Permitted values are: "roundrobin", "broadcast",
"activebackup", "loadbalance", "lacp", "random".

Format: string

runner-active
Corresponds to the teamd runner.active.

Format: boolean

runner-agg-select-policy
Corresponds to the teamd runner.agg_select_policy.

Format: string

runner-fast-rate
Corresponds to the teamd runner.fast_rate.

Format: boolean

runner-hwaddr-policy
Corresponds to the teamd runner.hwaddr_policy.

Format: string

runner-min-ports
Corresponds to the teamd runner.min_ports.

Format: int32

runner-sys-prio
Corresponds to the teamd runner.sys_prio.

Format: int32

runner-tx-balancer
Corresponds to the teamd runner.tx_balancer.name.

Format: string

runner-tx-balancer-interval
Corresponds to the teamd runner.tx_balancer.interval.

Format: int32

runner-tx-hash
Corresponds to the teamd runner.tx_hash.

Format: array of string

team-port setting
Team Port Settings.

Properties:

config
Alias: config

The JSON configuration for the team port. The property should contain raw JSON
configuration data suitable for teamd, because the value is passed directly to teamd.
If not specified, the default configuration is used. See man teamd.conf for the format
details.

Format: string

lacp-key
Corresponds to the teamd ports.PORTIFNAME.lacp_key.

Format: int32

lacp-prio
Corresponds to the teamd ports.PORTIFNAME.lacp_prio.

Format: int32

Format: array of vardict

prio
Corresponds to the teamd ports.PORTIFNAME.prio.

Format: int32

queue-id
Corresponds to the teamd ports.PORTIFNAME.queue_id. When set to -1 means the parameter
is skipped from the json config.

Format: int32

sticky
Corresponds to the teamd ports.PORTIFNAME.sticky.

Format: boolean

tun setting
Tunnel Settings.

Properties:

group
Alias: group

The group ID which will own the device. If set to NULL everyone will be able to use
the device.

Format: string

mode
Alias: mode

The operating mode of the virtual device. Allowed values are NM_SETTING_TUN_MODE_TUN
(1) to create a layer 3 device and NM_SETTING_TUN_MODE_TAP (2) to create an
Ethernet-like layer 2 one.

Format: uint32

multi-queue
Alias: multi-queue

If the property is set to TRUE, the interface will support multiple file descriptors
(queues) to parallelize packet sending or receiving. Otherwise, the interface will
only support a single queue.

Format: boolean

owner
Alias: owner

The user ID which will own the device. If set to NULL everyone will be able to use the
device.

Format: string

pi
Alias: pi

If TRUE the interface will prepend a 4 byte header describing the physical interface
to the packets.

Format: boolean

vnet-hdr
Alias: vnet-hdr

If TRUE the IFF_VNET_HDR the tunnel packets will include a virtio network header.

Format: boolean

vlan setting
VLAN Settings.

Properties:

egress-priority-map
Alias: egress

For outgoing packets, a list of mappings from Linux SKB priorities to 802.1p
priorities. The mapping is given in the format "from:to" where both "from" and "to"
are unsigned integers, ie "7:3".

Format: array of string

flags
Alias: flags

One or more flags which control the behavior and features of the VLAN interface. Flags
include NM_VLAN_FLAG_REORDER_HEADERS (0x1) (reordering of output packet headers),
NM_VLAN_FLAG_GVRP (0x2) (use of the GVRP protocol), and NM_VLAN_FLAG_LOOSE_BINDING
(0x4) (loose binding of the interface to its master device's operating state).
NM_VLAN_FLAG_MVRP (0x8) (use of the MVRP protocol).

The default value of this property is NM_VLAN_FLAG_REORDER_HEADERS, but it used to be
0. To preserve backward compatibility, the default-value in the D-Bus API continues to
be 0 and a missing property on D-Bus is still considered as 0.

Format: NMVlanFlags (uint32)

id
Alias: id

The VLAN identifier that the interface created by this connection should be assigned.
The valid range is from 0 to 4094, without the reserved id 4095.

Format: uint32

ingress-priority-map
Alias: ingress

For incoming packets, a list of mappings from 802.1p priorities to Linux SKB
priorities. The mapping is given in the format "from:to" where both "from" and "to"
are unsigned integers, ie "7:3".

Format: array of string

parent
Alias: dev

If given, specifies the parent interface name or parent connection UUID from which
this VLAN interface should be created. If this property is not specified, the
connection must contain an "802-3-ethernet" setting with a "mac-address" property.

Format: string

vpn setting
VPN Settings.

Properties:

data
Dictionary of key/value pairs of VPN plugin specific data. Both keys and values must
be strings.

Format: dict of string to string

persistent
If the VPN service supports persistence, and this property is TRUE, the VPN will
attempt to stay connected across link changes and outages, until explicitly
disconnected.

Format: boolean

secrets
Dictionary of key/value pairs of VPN plugin specific secrets like passwords or private
keys. Both keys and values must be strings.

Format: dict of string to string

service-type
Alias: vpn-type

D-Bus service name of the VPN plugin that this setting uses to connect to its network.
i.e. org.freedesktop.NetworkManager.vpnc for the vpnc plugin.

Format: string

timeout
Timeout for the VPN service to establish the connection. Some services may take quite
a long time to connect. Value of 0 means a default timeout, which is 60 seconds
(unless overridden by vpn.timeout in configuration file). Values greater than zero
mean timeout in seconds.

Format: uint32

user-name
Alias: user

If the VPN connection requires a user name for authentication, that name should be
provided here. If the connection is available to more than one user, and the VPN
requires each user to supply a different name, then leave this property empty. If this
property is empty, NetworkManager will automatically supply the username of the user
which requested the VPN connection.

Format: string

vrf setting
VRF settings.

Properties:

table
Alias: table

The routing table for this VRF.

Format: uint32

vxlan setting
VXLAN Settings.

Properties:

ageing
Specifies the lifetime in seconds of FDB entries learnt by the kernel.

Format: uint32

destination-port
Alias: destination-port

Specifies the UDP destination port to communicate to the remote VXLAN tunnel endpoint.

Format: uint32

id
Alias: id

Specifies the VXLAN Network Identifier (or VXLAN Segment Identifier) to use.

Format: uint32

l2-miss
Specifies whether netlink LL ADDR miss notifications are generated.

Format: boolean

l3-miss
Specifies whether netlink IP ADDR miss notifications are generated.

Format: boolean

learning
Specifies whether unknown source link layer addresses and IP addresses are entered
into the VXLAN device forwarding database.

Format: boolean

limit
Specifies the maximum number of FDB entries. A value of zero means that the kernel
will store unlimited entries.

Format: uint32

local
Alias: local

If given, specifies the source IP address to use in outgoing packets.

Format: string

parent
Alias: dev

If given, specifies the parent interface name or parent connection UUID.

Format: string

proxy
Specifies whether ARP proxy is turned on.

Format: boolean

remote
Alias: remote

Specifies the unicast destination IP address to use in outgoing packets when the
destination link layer address is not known in the VXLAN device forwarding database,
or the multicast IP address to join.

Format: string

rsc
Specifies whether route short circuit is turned on.

Format: boolean

source-port-max
Alias: source-port-max

Specifies the maximum UDP source port to communicate to the remote VXLAN tunnel
endpoint.

Format: uint32

source-port-min
Alias: source-port-min

Specifies the minimum UDP source port to communicate to the remote VXLAN tunnel
endpoint.

Format: uint32

tos
Specifies the TOS value to use in outgoing packets.

Format: uint32

ttl
Specifies the time-to-live value to use in outgoing packets.

Format: uint32

wifi-p2p setting
Wi-Fi P2P Settings.

Properties:

peer
Alias: peer

The P2P device that should be connected to. Currently, this is the only way to create
or join a group.

Format: string

wfd-ies
The Wi-Fi Display (WFD) Information Elements (IEs) to set.

Wi-Fi Display requires a protocol specific information element to be set in certain
Wi-Fi frames. These can be specified here for the purpose of establishing a
connection. This setting is only useful when implementing a Wi-Fi Display client.

Format: byte array

wps-method
Flags indicating which mode of WPS is to be used.

There's little point in changing the default setting as NetworkManager will
automatically determine the best method to use.

Format: uint32

wimax setting
WiMax Settings.

Properties:

mac-address
Alias: mac

If specified, this connection will only apply to the WiMAX device whose MAC address
matches. This property does not change the MAC address of the device (known as MAC
spoofing). Deprecated: 1

Format: byte array

network-name
Alias: nsp

Network Service Provider (NSP) name of the WiMAX network this connection should use.
Deprecated: 1

Format: string

802-3-ethernet setting
Alias: ethernet

Wired Ethernet Settings.

Properties:

accept-all-mac-addresses
When TRUE, setup the interface to accept packets for all MAC addresses. This is
enabling the kernel interface flag IFF_PROMISC. When FALSE, the interface will only
accept the packets with the interface destination mac address or broadcast.

Format: NMTernary (int32)

auto-negotiate
When TRUE, enforce auto-negotiation of speed and duplex mode. If "speed" and "duplex"
properties are both specified, only that single mode will be advertised and accepted
during the link auto-negotiation process: this works only for BASE-T 802.3
specifications and is useful for enforcing gigabits modes, as in these cases link
negotiation is mandatory. When FALSE, "speed" and "duplex" properties should be both
set or link configuration will be skipped.

Format: boolean

cloned-mac-address
Alias: cloned-mac

If specified, request that the device use this MAC address instead. This is known as
MAC cloning or spoofing.

Beside explicitly specifying a MAC address, the special values "preserve",
"permanent", "random" and "stable" are supported. "preserve" means not to touch the
MAC address on activation. "permanent" means to use the permanent hardware address if
the device has one (otherwise this is treated as "preserve"). "random" creates a
random MAC address on each connect. "stable" creates a hashed MAC address based on
connection.stable-id and a machine dependent key.

If unspecified, the value can be overwritten via global defaults, see manual of
NetworkManager.conf. If still unspecified, it defaults to "preserve" (older versions
of NetworkManager may use a different default value).

On D-Bus, this field is expressed as "assigned-mac-address" or the deprecated
"cloned-mac-address".

Format: byte array

duplex
When a value is set, either "half" or "full", configures the device to use the
specified duplex mode. If "auto-negotiate" is "yes" the specified duplex mode will be
the only one advertised during link negotiation: this works only for BASE-T 802.3
specifications and is useful for enforcing gigabits modes, as in these cases link
negotiation is mandatory. If the value is unset (the default), the link configuration
will be either skipped (if "auto-negotiate" is "no", the default) or will be
auto-negotiated (if "auto-negotiate" is "yes") and the local device will advertise all
the supported duplex modes. Must be set together with the "speed" property if
specified. Before specifying a duplex mode be sure your device supports it.

Format: string

generate-mac-address-mask
With "cloned-mac-address" setting "random" or "stable", by default all bits of the MAC
address are scrambled and a locally-administered, unicast MAC address is created. This
property allows to specify that certain bits are fixed. Note that the least
significant bit of the first MAC address will always be unset to create a unicast MAC
address.

If the property is NULL, it is eligible to be overwritten by a default connection
setting. If the value is still NULL or an empty string, the default is to create a
locally-administered, unicast MAC address.

If the value contains one MAC address, this address is used as mask. The set bits of
the mask are to be filled with the current MAC address of the device, while the unset
bits are subject to randomization. Setting "FE:FF:FF:00:00:00" means to preserve the
OUI of the current MAC address and only randomize the lower 3 bytes using the "random"
or "stable" algorithm.

If the value contains one additional MAC address after the mask, this address is used
instead of the current MAC address to fill the bits that shall not be randomized. For
example, a value of "FE:FF:FF:00:00:00 68:F7:28:00:00:00" will set the OUI of the MAC
address to 68:F7:28, while the lower bits are randomized. A value of
"02:00:00:00:00:00 00:00:00:00:00:00" will create a fully scrambled
globally-administered, burned-in MAC address.

If the value contains more than one additional MAC addresses, one of them is chosen
randomly. For example, "02:00:00:00:00:00 00:00:00:00:00:00 02:00:00:00:00:00" will
create a fully scrambled MAC address, randomly locally or globally administered.

Format: string

mac-address
Alias: mac

If specified, this connection will only apply to the Ethernet device whose permanent
MAC address matches. This property does not change the MAC address of the device (i.e.
MAC spoofing).

Format: byte array

mac-address-blacklist
If specified, this connection will never apply to the Ethernet device whose permanent
MAC address matches an address in the list. Each MAC address is in the standard
hex-digits-and-colons notation (00:11:22:33:44:55).

Format: array of string

mtu
Alias: mtu

If non-zero, only transmit packets of the specified size or smaller, breaking larger
packets up into multiple Ethernet frames.

Format: uint32

port
Specific port type to use if the device supports multiple attachment methods. One of
"tp" (Twisted Pair), "aui" (Attachment Unit Interface), "bnc" (Thin Ethernet) or "mii"
(Media Independent Interface). If the device supports only one port type, this setting
is ignored.

Format: string

s390-nettype
s390 network device type; one of "qeth", "lcs", or "ctc", representing the different
types of virtual network devices available on s390 systems.

Format: string

s390-options
Dictionary of key/value pairs of s390-specific device options. Both keys and values
must be strings. Allowed keys include "portno", "layer2", "portname", "protocol",
among others. Key names must contain only alphanumeric characters (ie, [a-zA-Z0-9]).

Currently, NetworkManager itself does nothing with this information. However,
s390utils ships a udev rule which parses this information and applies it to the
interface.

Format: dict of string to string

s390-subchannels
Identifies specific subchannels that this network device uses for communication with
z/VM or s390 host. Like the "mac-address" property for non-z/VM devices, this property
can be used to ensure this connection only applies to the network device that uses
these subchannels. The list should contain exactly 3 strings, and each string may only
be composed of hexadecimal characters and the period (.) character.

Format: array of string

speed
When a value greater than 0 is set, configures the device to use the specified speed.
If "auto-negotiate" is "yes" the specified speed will be the only one advertised
during link negotiation: this works only for BASE-T 802.3 specifications and is useful
for enforcing gigabit speeds, as in this case link negotiation is mandatory. If the
value is unset (0, the default), the link configuration will be either skipped (if
"auto-negotiate" is "no", the default) or will be auto-negotiated (if "auto-negotiate"
is "yes") and the local device will advertise all the supported speeds. In Mbit/s, ie
100 == 100Mbit/s. Must be set together with the "duplex" property when non-zero.
Before specifying a speed value be sure your device supports it.

Format: uint32

wake-on-lan
The NMSettingWiredWakeOnLan options to enable. Not all devices support all options.
May be any combination of NM_SETTING_WIRED_WAKE_ON_LAN_PHY (0x2),
NM_SETTING_WIRED_WAKE_ON_LAN_UNICAST (0x4), NM_SETTING_WIRED_WAKE_ON_LAN_MULTICAST
(0x8), NM_SETTING_WIRED_WAKE_ON_LAN_BROADCAST (0x10), NM_SETTING_WIRED_WAKE_ON_LAN_ARP
(0x20), NM_SETTING_WIRED_WAKE_ON_LAN_MAGIC (0x40) or the special values
NM_SETTING_WIRED_WAKE_ON_LAN_DEFAULT (0x1) (to use global settings) and
NM_SETTING_WIRED_WAKE_ON_LAN_IGNORE (0x8000) (to disable management of Wake-on-LAN in
NetworkManager).

Format: uint32

wake-on-lan-password
If specified, the password used with magic-packet-based Wake-on-LAN, represented as an
Ethernet MAC address. If NULL, no password will be required.

Format: string

wireguard setting
WireGuard Settings.

Properties:

fwmark
The use of fwmark is optional and is by default off. Setting it to 0 disables it.
Otherwise, it is a 32-bit fwmark for outgoing packets.

Note that "ip4-auto-default-route" or "ip6-auto-default-route" enabled, implies to
automatically choose a fwmark.

Format: uint32

ip4-auto-default-route
Whether to enable special handling of the IPv4 default route. If enabled, the IPv4
default route from wireguard.peer-routes will be placed to a dedicated routing-table
and two policy routing rules will be added. The fwmark number is also used as
routing-table for the default-route, and if fwmark is zero, an unused fwmark/table is
chosen automatically. This corresponds to what wg-quick does with Table=auto and what
WireGuard calls "Improved Rule-based Routing".

Note that for this automatism to work, you usually don't want to set ipv4.gateway,
because that will result in a conflicting default route.

Leaving this at the default will enable this option automatically if
ipv4.never-default is not set and there are any peers that use a default-route as
allowed-ips. Since this automatism only makes sense if you also have a peer with an /0
allowed-ips, it is usually not necessary to enable this explicitly. However, you can
disable it if you want to configure your own routing and rules.

Format: NMTernary (int32)

ip6-auto-default-route
Like ip4-auto-default-route, but for the IPv6 default route.

Format: NMTernary (int32)

listen-port
The listen-port. If listen-port is not specified, the port will be chosen randomly
when the interface comes up.

Format: uint32

mtu
If non-zero, only transmit packets of the specified size or smaller, breaking larger
packets up into multiple fragments.

If zero a default MTU is used. Note that contrary to wg-quick's MTU setting, this does
not take into account the current routes at the time of activation.

Format: uint32

peer-routes
Whether to automatically add routes for the AllowedIPs ranges of the peers. If TRUE
(the default), NetworkManager will automatically add routes in the routing tables
according to ipv4.route-table and ipv6.route-table. Usually you want this automatism
enabled. If FALSE, no such routes are added automatically. In this case, the user may
want to configure static routes in ipv4.routes and ipv6.routes, respectively.

Note that if the peer's AllowedIPs is "0.0.0.0/0" or "::/0" and the profile's
ipv4.never-default or ipv6.never-default setting is enabled, the peer route for this
peer won't be added automatically.

Format: boolean

private-key
The 256 bit private-key in base64 encoding.

Format: string

private-key-flags
Flags indicating how to handle the "private-key" property.

Format: NMSettingSecretFlags (uint32)

802-11-wireless setting
Alias: wifi

Wi-Fi Settings.

Properties:

ap-isolation
Configures AP isolation, which prevents communication between wireless devices
connected to this AP. This property can be set to a value different from
NM_TERNARY_DEFAULT (-1) only when the interface is configured in AP mode.

If set to NM_TERNARY_TRUE (1), devices are not able to communicate with each other.
This increases security because it protects devices against attacks from other clients
in the network. At the same time, it prevents devices to access resources on the same
wireless networks as file shares, printers, etc.

If set to NM_TERNARY_FALSE (0), devices can talk to each other.

When set to NM_TERNARY_DEFAULT (-1), the global default is used; in case the global
default is unspecified it is assumed to be NM_TERNARY_FALSE (0).

Format: NMTernary (int32)

band
802.11 frequency band of the network. One of "a" for 5GHz 802.11a or "bg" for 2.4GHz
802.11. This will lock associations to the Wi-Fi network to the specific band, i.e. if
"a" is specified, the device will not associate with the same network in the 2.4GHz
band even if the network's settings are compatible. This setting depends on specific
driver capability and may not work with all drivers.

Format: string

bssid
If specified, directs the device to only associate with the given access point. This
capability is highly driver dependent and not supported by all devices. Note: this
property does not control the BSSID used when creating an Ad-Hoc network and is
unlikely to in the future.

Locking a client profile to a certain BSSID will prevent roaming and also disable
background scanning. That can be useful, if there is only one access point for the
SSID.

Format: byte array

channel
Wireless channel to use for the Wi-Fi connection. The device will only join (or create
for Ad-Hoc networks) a Wi-Fi network on the specified channel. Because channel numbers
overlap between bands, this property also requires the "band" property to be set.

Format: uint32

cloned-mac-address
Alias: cloned-mac

If specified, request that the device use this MAC address instead. This is known as
MAC cloning or spoofing.

Beside explicitly specifying a MAC address, the special values "preserve",
"permanent", "random" and "stable" are supported. "preserve" means not to touch the
MAC address on activation. "permanent" means to use the permanent hardware address of
the device. "random" creates a random MAC address on each connect. "stable" creates a
hashed MAC address based on connection.stable-id and a machine dependent key.

On D-Bus, this field is expressed as "assigned-mac-address" or the deprecated
"cloned-mac-address".

Format: byte array

Format: string

hidden
If TRUE, indicates that the network is a non-broadcasting network that hides its SSID.
This works both in infrastructure and AP mode.

In infrastructure mode, various workarounds are used for a more reliable discovery of
hidden networks, such as probe-scanning the SSID. However, these workarounds expose
inherent insecurities with hidden SSID networks, and thus hidden SSID networks should
be used with caution.

In AP mode, the created network does not broadcast its SSID.

Note that marking the network as hidden may be a privacy issue for you (in
infrastructure mode) or client stations (in AP mode), as the explicit probe-scans are
distinctly recognizable on the air.

Format: boolean

mac-address
Alias: mac

If specified, this connection will only apply to the Wi-Fi device whose permanent MAC
address matches. This property does not change the MAC address of the device (i.e. MAC
spoofing).

Format: byte array

mac-address-blacklist
A list of permanent MAC addresses of Wi-Fi devices to which this connection should
never apply. Each MAC address should be given in the standard hex-digits-and-colons
notation (eg "00:11:22:33:44:55").

Format: array of string

mac-address-randomization
One of NM_SETTING_MAC_RANDOMIZATION_DEFAULT (0) (never randomize unless the user has
set a global default to randomize and the supplicant supports randomization),
NM_SETTING_MAC_RANDOMIZATION_NEVER (1) (never randomize the MAC address), or
NM_SETTING_MAC_RANDOMIZATION_ALWAYS (2) (always randomize the MAC address). This
property is deprecated for 'cloned-mac-address'. Deprecated: 1

Format: uint32

mode
Alias: mode

Wi-Fi network mode; one of "infrastructure", "mesh", "adhoc" or "ap". If blank,
infrastructure is assumed.

Format: string

mtu
Alias: mtu

If non-zero, only transmit packets of the specified size or smaller, breaking larger
packets up into multiple Ethernet frames.

Format: uint32

powersave
One of NM_SETTING_WIRELESS_POWERSAVE_DISABLE (2) (disable Wi-Fi power saving),
NM_SETTING_WIRELESS_POWERSAVE_ENABLE (3) (enable Wi-Fi power saving),
NM_SETTING_WIRELESS_POWERSAVE_IGNORE (1) (don't touch currently configure setting) or
NM_SETTING_WIRELESS_POWERSAVE_DEFAULT (0) (use the globally configured value). All
other values are reserved.

Format: uint32

rate
If non-zero, directs the device to only use the specified bitrate for communication
with the access point. Units are in Kb/s, ie 5500 = 5.5 Mbit/s. This property is
highly driver dependent and not all devices support setting a static bitrate.

Format: uint32

seen-bssids
A list of BSSIDs (each BSSID formatted as a MAC address like "00:11:22:33:44:55") that
have been detected as part of the Wi-Fi network. NetworkManager internally tracks
previously seen BSSIDs. The property is only meant for reading and reflects the BSSID
list of NetworkManager. The changes you make to this property will not be preserved.

Format: array of string

ssid
Alias: ssid

SSID of the Wi-Fi network. Must be specified.

Format: byte array

tx-power
If non-zero, directs the device to use the specified transmit power. Units are dBm.
This property is highly driver dependent and not all devices support setting a static
transmit power.

Format: uint32

wake-on-wlan
The NMSettingWirelessWakeOnWLan options to enable. Not all devices support all
options. May be any combination of NM_SETTING_WIRELESS_WAKE_ON_WLAN_ANY (0x2),
NM_SETTING_WIRELESS_WAKE_ON_WLAN_DISCONNECT (0x4),
NM_SETTING_WIRELESS_WAKE_ON_WLAN_MAGIC (0x8),
NM_SETTING_WIRELESS_WAKE_ON_WLAN_GTK_REKEY_FAILURE (0x10),
NM_SETTING_WIRELESS_WAKE_ON_WLAN_EAP_IDENTITY_REQUEST (0x20),
NM_SETTING_WIRELESS_WAKE_ON_WLAN_4WAY_HANDSHAKE (0x40),
NM_SETTING_WIRELESS_WAKE_ON_WLAN_RFKILL_RELEASE (0x80),
NM_SETTING_WIRELESS_WAKE_ON_WLAN_TCP (0x100) or the special values
NM_SETTING_WIRELESS_WAKE_ON_WLAN_DEFAULT (0x1) (to use global settings) and
NM_SETTING_WIRELESS_WAKE_ON_WLAN_IGNORE (0x8000) (to disable management of Wake-on-LAN
in NetworkManager).

Format: uint32

802-11-wireless-security setting
Alias: wifi-sec

Wi-Fi Security Settings.

Properties:

auth-alg
When WEP is used (ie, key-mgmt = "none" or "ieee8021x") indicate the 802.11
authentication algorithm required by the AP here. One of "open" for Open System,
"shared" for Shared Key, or "leap" for Cisco LEAP. When using Cisco LEAP (ie, key-mgmt
= "ieee8021x" and auth-alg = "leap") the "leap-username" and "leap-password"
properties must be specified.

Format: string

fils
Indicates whether Fast Initial Link Setup (802.11ai) must be enabled for the
connection. One of NM_SETTING_WIRELESS_SECURITY_FILS_DEFAULT (0) (use global default
value), NM_SETTING_WIRELESS_SECURITY_FILS_DISABLE (1) (disable FILS),
NM_SETTING_WIRELESS_SECURITY_FILS_OPTIONAL (2) (enable FILS if the supplicant and the
access point support it) or NM_SETTING_WIRELESS_SECURITY_FILS_REQUIRED (3) (enable
FILS and fail if not supported). When set to NM_SETTING_WIRELESS_SECURITY_FILS_DEFAULT
(0) and no global default is set, FILS will be optionally enabled.

Format: int32

group
A list of group/broadcast encryption algorithms which prevents connections to Wi-Fi
networks that do not utilize one of the algorithms in the list. For maximum
compatibility leave this property empty. Each list element may be one of "wep40",
"wep104", "tkip", or "ccmp".

Format: array of string

key-mgmt
Key management used for the connection. One of "none" (WEP or no password protection),
"ieee8021x" (Dynamic WEP), "owe" (Opportunistic Wireless Encryption), "wpa-psk" (WPA2
+ WPA3 personal), "sae" (WPA3 personal only), "wpa-eap" (WPA2 + WPA3 enterprise) or
"wpa-eap-suite-b-192" (WPA3 enterprise only).

This property must be set for any Wi-Fi connection that uses security.

Format: string

leap-password
The login password for legacy LEAP connections (ie, key-mgmt = "ieee8021x" and
auth-alg = "leap").

Format: string

leap-password-flags
Flags indicating how to handle the "leap-password" property.

Format: NMSettingSecretFlags (uint32)

leap-username
The login username for legacy LEAP connections (ie, key-mgmt = "ieee8021x" and
auth-alg = "leap").

Format: string

pairwise
A list of pairwise encryption algorithms which prevents connections to Wi-Fi networks
that do not utilize one of the algorithms in the list. For maximum compatibility leave
this property empty. Each list element may be one of "tkip" or "ccmp".

Format: array of string

pmf
Indicates whether Protected Management Frames (802.11w) must be enabled for the
connection. One of NM_SETTING_WIRELESS_SECURITY_PMF_DEFAULT (0) (use global default
value), NM_SETTING_WIRELESS_SECURITY_PMF_DISABLE (1) (disable PMF),
NM_SETTING_WIRELESS_SECURITY_PMF_OPTIONAL (2) (enable PMF if the supplicant and the
access point support it) or NM_SETTING_WIRELESS_SECURITY_PMF_REQUIRED (3) (enable PMF
and fail if not supported). When set to NM_SETTING_WIRELESS_SECURITY_PMF_DEFAULT (0)
and no global default is set, PMF will be optionally enabled.

Format: int32

proto
List of strings specifying the allowed WPA protocol versions to use. Each element may
be one "wpa" (allow WPA) or "rsn" (allow WPA2/RSN). If not specified, both WPA and RSN
connections are allowed.

Format: array of string

psk
Pre-Shared-Key for WPA networks. For WPA-PSK, it's either an ASCII passphrase of 8 to
63 characters that is (as specified in the 802.11i standard) hashed to derive the
actual key, or the key in form of 64 hexadecimal character. The WPA3-Personal networks
use a passphrase of any length for SAE authentication.

Format: string

psk-flags
Flags indicating how to handle the "psk" property.

Format: NMSettingSecretFlags (uint32)

wep-key-flags
Flags indicating how to handle the "wep-key0", "wep-key1", "wep-key2", and "wep-key3"
properties.

Format: NMSettingSecretFlags (uint32)

wep-key-type
Controls the interpretation of WEP keys. Allowed values are NM_WEP_KEY_TYPE_KEY (1),
in which case the key is either a 10- or 26-character hexadecimal string, or a 5- or
13-character ASCII password; or NM_WEP_KEY_TYPE_PASSPHRASE (2), in which case the
passphrase is provided as a string and will be hashed using the de-facto MD5 method to
derive the actual WEP key.

Format: NMWepKeyType (uint32)

wep-key0
Index 0 WEP key. This is the WEP key used in most networks. See the "wep-key-type"
property for a description of how this key is interpreted.

Format: string

wep-key1
Index 1 WEP key. This WEP index is not used by most networks. See the "wep-key-type"
property for a description of how this key is interpreted.

Format: string

wep-key2
Index 2 WEP key. This WEP index is not used by most networks. See the "wep-key-type"
property for a description of how this key is interpreted.

Format: string

wep-key3
Index 3 WEP key. This WEP index is not used by most networks. See the "wep-key-type"
property for a description of how this key is interpreted.

Format: string

wep-tx-keyidx
When static WEP is used (ie, key-mgmt = "none") and a non-default WEP key index is
used by the AP, put that WEP key index here. Valid values are 0 (default key) through
3. Note that some consumer access points (like the Linksys WRT54G) number the keys 1 -
4.

Format: uint32

wps-method
Flags indicating which mode of WPS is to be used if any.

There's little point in changing the default setting as NetworkManager will
automatically determine whether it's feasible to start WPS enrollment from the Access
Point capabilities.

WPS can be disabled by setting this property to a value of 1.

Format: uint32

wpan setting
IEEE 802.15.4 (WPAN) MAC Settings.

Properties:

channel
Alias: channel

IEEE 802.15.4 channel. A positive integer or -1, meaning "do not set, use whatever the
device is already set to".

Format: int32

mac-address
Alias: mac

If specified, this connection will only apply to the IEEE 802.15.4 (WPAN) MAC layer
device whose permanent MAC address matches.

Format: string

page
Alias: page

IEEE 802.15.4 channel page. A positive integer or -1, meaning "do not set, use
whatever the device is already set to".

Format: int32

pan-id
Alias: pan-id

IEEE 802.15.4 Personal Area Network (PAN) identifier.

Format: uint32

short-address
Alias: short-addr

Short IEEE 802.15.4 address to be used within a restricted environment.

Format: uint32

bond-port setting
Bond Port Settings.

Properties:

queue-id
Alias: queue-id

The queue ID of this bond port. The maximum value of queue ID is the number of TX
queues currently active in device.

Format: uint32

hostname setting
Hostname settings.

Properties:

from-dhcp
Whether the system hostname can be determined from DHCP on this connection.

When set to NM_TERNARY_DEFAULT (-1), the value from global configuration is used. If
the property doesn't have a value in the global configuration, NetworkManager assumes
the value to be NM_TERNARY_TRUE (1).

Format: NMTernary (int32)

from-dns-lookup
Whether the system hostname can be determined from reverse DNS lookup of addresses on
this device.

Format: NMTernary (int32)

only-from-default
If set to NM_TERNARY_TRUE (1), NetworkManager attempts to get the hostname via
DHCPv4/DHCPv6 or reverse DNS lookup on this device only when the device has the
default route for the given address family (IPv4/IPv6).

If set to NM_TERNARY_FALSE (0), the hostname can be set from this device even if it
doesn't have the default route.

Format: NMTernary (int32)

priority
The relative priority of this connection to determine the system hostname. A lower
numerical value is better (higher priority). A connection with higher priority is
considered before connections with lower priority.

If the value is zero, it can be overridden by a global value from NetworkManager
configuration. If the property doesn't have a value in the global configuration, the
value is assumed to be 100.

Negative values have the special effect of excluding other connections with a greater
numerical priority value; so in presence of at least one negative priority, only
connections with the lowest priority value will be used to determine the hostname.

Format: int32

veth setting
Veth Settings.

Properties:

peer
Alias: peer

This property specifies the peer interface name of the veth. This property is
mandatory.

Format: string

Secret flag types:
Each password or secret property in a setting has an associated flags property that
describes how to handle that secret. The flags property is a bitfield that contains zero
or more of the following values logically OR-ed together.

• 0x0 (none) - the system is responsible for providing and storing this secret. This may
be required so that secrets are already available before the user logs in. It also
commonly means that the secret will be stored in plain text on disk, accessible to
root only. For example via the keyfile settings plugin as described in the "PLUGINS"
section in NetworkManager.conf(5).

• 0x1 (agent-owned) - a user-session secret agent is responsible for providing and
storing this secret; when it is required, agents will be asked to provide it.

• 0x2 (not-saved) - this secret should not be saved but should be requested from the
user each time it is required. This flag should be used for One-Time-Pad secrets, PIN
codes from hardware tokens, or if the user simply does not want to save the secret.

• 0x4 (not-required) - in some situations it cannot be automatically determined that a
secret is required or not. This flag hints that the secret is not required and should
not be requested from the user.

FILES

       /etc/NetworkManager/system-connections or distro plugin-specific location

NAME

DESCRIPTION

FILES

SEE ALSO