Ubuntu Manpage: networkctl - Query or modify the status of network links

Provided by: systemd_257.4-1ubuntu3.2_amd64

NAME

       networkctl - Query or modify the status of network links

SYNOPSIS


       networkctl [OPTIONS...] COMMAND [LINK...]

DESCRIPTION

       networkctl may be used to query or modify the state of the network links as seen by systemd-networkd.
       Please refer to systemd-networkd.service(8) for an introduction to the basic concepts, functionality, and
       configuration syntax.

COMMANDS

The following commands are understood:

list [PATTERN...]
Show a list of existing links and their status. If one or more PATTERNs are specified, only links
matching one of them are shown. If no further arguments are specified shows all links, otherwise just
the specified links. Produces output similar to:

IDX LINK TYPE OPERATIONAL SETUP
1 lo loopback carrier unmanaged
2 eth0 ether routable configured
3 virbr0 ether no-carrier unmanaged
4 virbr0-nic ether off unmanaged

4 links listed.

The operational status is one of the following:

missing
The device is missing.

Added in version 245.

off
The device is powered down.

Added in version 240.

no-carrier
The device is powered up, but does not yet have a carrier.

Added in version 240.

dormant
The device has a carrier, but is not yet ready for normal traffic.

Added in version 240.

degraded-carrier
One of the bonding or bridge slave network interfaces is in off, no-carrier, or dormant state,
and the master interface has no address.

Added in version 242.

carrier
The link has carrier, or for bond or bridge master, all bonding or bridge slave network
interfaces are enslaved to the master.

Added in version 240.

degraded
The link has carrier and addresses valid on the local link configured. For bond or bridge master
this means that not all slave network interfaces have carrier but at least one does.

Added in version 240.

enslaved
The link has carrier and is enslaved to bond or bridge master network interface.

Added in version 242.

routable
The link has carrier and routable address configured. For bond or bridge master it is not
necessary for all slave network interfaces to have carrier, but at least one must.

Added in version 240.

The setup status is one of the following:

pending
systemd-udevd(8) is still processing the link, we don't yet know if we will manage it.

Added in version 240.

initialized
systemd-udevd(8) has processed the link, but we don't yet know if we will manage it.

Added in version 251.

configuring
Configuration for the link is being retrieved or the link is being configured.

Added in version 240.

configured
Link has been configured successfully.

Added in version 240.

unmanaged
systemd-networkd is not handling the link.

Added in version 240.

failed
systemd-networkd failed to configure the link.

Added in version 240.

linger
The link is gone, but has not yet been dropped by systemd-networkd.

Added in version 240.

Added in version 219.

status [PATTERN...]
Show information about the specified links: type, state, kernel module driver, hardware and IP
address, configured DNS servers, etc. If one or more PATTERNs are specified, only links matching one
of them are shown.

When no links are specified, an overall network status is shown. Also see the option --all.

Produces output similar to:

● State: routable
Online state: online
Address: 10.193.76.5 on eth0
192.168.122.1 on virbr0
169.254.190.105 on eth0
fe80::5054:aa:bbbb:cccc on eth0
Gateway: 10.193.11.1 (CISCO SYSTEMS, INC.) on eth0
DNS: 8.8.8.8
8.8.4.4

In the overall network status, the online state depends on the individual online state of all
required links. Managed links are required for online by default. In this case, the online state is
one of the following:

unknown
All links have unknown online status (i.e. there are no required links).

Added in version 249.

offline
All required links are offline.

Added in version 249.

partial
Some, but not all, required links are online.

Added in version 249.

online
All required links are online.

Added in version 249.

Added in version 219.

lldp [PATTERN...]
Show discovered LLDP (Link Layer Discovery Protocol) neighbors. If one or more PATTERNs are specified
only neighbors on those interfaces are shown. Otherwise shows discovered neighbors on all interfaces.
Note that for this feature to work, LLDP= must be turned on for the specific interface, see
systemd.network(5) for details.

Produces output similar to:

LINK SYSTEM-NAME SYSTEM-DESCRIPTION CHASSIS-ID PORT-ID PORT-DESCRIPTION CAPS
enp0s25 GS1900 - 00:e0:4c:00:00:00 2 Port #2 ..b........

Capability Flags:
o - Other; p - Repeater; b - Bridge; w - WLAN Access Point; r - Router;
t - Telephone; d - DOCSIS cable device; a - Station; c - Customer VLAN;
s - Service VLAN, m - Two-port MAC Relay (TPMR)

1 neighbor(s) listed.

Added in version 219.

label
Show numerical address labels that can be used for address selection. This is the same information
that ip-addrlabel(8) shows. See RFC 3484[1] for a discussion of address labels.

Produces output similar to:

Prefix/Prefixlen Label
::/0 1
fc00::/7 5
fec0::/10 11
2002::/16 2
3ffe::/16 12
2001:10::/28 7
2001::/32 6
::ffff:0.0.0.0/96 4
::/96 3
::1/128 0

Added in version 234.

delete DEVICE...
Deletes virtual netdevs. Takes interface name or index number.

Added in version 243.

up DEVICE...
Bring devices up. Takes interface name or index number.

Added in version 246.

down DEVICE...
Bring devices down. Takes interface name or index number.

Added in version 246.

renew DEVICE...
Renew dynamic configurations e.g. addresses received from DHCP server. Takes interface name or index
number.

Added in version 244.

forcerenew DEVICE...
Send a FORCERENEW message to all connected clients, triggering DHCP reconfiguration. Takes interface
name or index number.

Added in version 246.

reconfigure DEVICE...
Reconfigure network interfaces. Takes interface name or index number. Note that this does not reload
.netdev or .network corresponding to the specified interface. So, if you edit config files, it is
necessary to call networkctl reload first to apply new settings.

Added in version 244.

reload
Reload .netdev and .network files.

If a new or modified .netdev file is found, then the corresponding netdev is created or updated,
respectively. Note, if the corresponding interface already exists, then some of new settings may not
be applied. E.g., VLAN ID cannot be changed after the interface was created, so changing [VLAN] Id=
will not take effect if the matching VLAN interface already exists. To apply such settings, the
interfaces need to be removed manually before reload. Also note that even if a .netdev file is
removed, systemd-networkd does not remove the existing netdev corresponding to the file.

If a new, modified, or removed .network file is found, then all interfaces that matched the file are
reconfigured.

Added in version 244.

edit FILE|@DEVICE...
Edit network configuration files, which include .network, .netdev, and .link files. If no network
config file matching the given name is found, a new one will be created under /etc/ or /run/,
depending on whether --runtime is specified. Specially, if the name is prefixed by "@", it will be
treated as a network interface, and editing will be performed on the network config files associated
with it. Additionally, the interface name can be suffixed with ":network" (default), ":link", or
":netdev", in order to choose the type of network config to operate on.

If --drop-in= is specified, edit the drop-in file instead of the main configuration file. Unless
--no-reload is specified, systemd-networkd will be reloaded after the edit of the .network or .netdev
files finishes. The same applies for .link files and systemd-udevd(8). Note that the changed link
settings are not automatically applied after reloading. To achieve that, trigger uevents for the
corresponding interface. Refer to systemd.link(5) for more information.

If --stdin is specified, the new content will be read from standard input. In this mode, the old
content of the file is discarded.

Added in version 254.

cat [FILE|@DEVICE...]
Show network configuration files. This command honors the "@" prefix in a similar way as edit, with
support for an additional suffix ":all" for showing all types of configuration files associated with
the interface at once. When no argument is specified, networkd.conf(5) and its drop-in files will be
shown.

Added in version 254.

mask FILE...
Mask network configuration files, which include .network, .netdev, and .link files. A symlink of the
given name will be created under /etc/ or /run/, depending on whether --runtime is specified, that
points to /dev/null. If a non-empty config file with the specified name exists under the target
directory or a directory with higher priority (e.g. --runtime is used while an existing config
resides in /etc/), the operation is aborted.

This command honors --no-reload in the same way as edit.

Added in version 256.

unmask FILE...
Unmask network configuration files, i.e. reverting the effect of mask. Note that this command
operates regardless of the scope of the directory, i.e. --runtime is of no effect.

This command honors --no-reload in the same way as edit and mask.

Added in version 256.

persistent-storage BOOL
Notify systemd-networkd.service that the persistent storage for the service is ready. This is called
by systemd-networkd-persistent-storage.service. Usually, this command should not be called manually
by users or administrators.

Added in version 256.

OPTIONS

The following options are understood:

-a --all
Show all links with status.

Added in version 219.

-s --stats
Show link statistics with status.

Added in version 243.

-l, --full
Do not ellipsize the output.

Added in version 245.

-n, --lines=
When used with status, controls the number of journal lines to show, counting from the most recent
ones. Takes a positive integer argument. Defaults to 10.

Added in version 245.

--drop-in=NAME
When used with edit, edit the drop-in file NAME instead of the main configuration file.

Added in version 254.

--no-reload
When used with edit, mask, or unmask, systemd-networkd.service(8) or systemd-udevd.service(8) will
not be reloaded after the operation finishes.

Added in version 254.

--runtime
When used with edit or mask, operate on the file under /run/ instead of /etc/.

Added in version 256.

--stdin
When used with edit, the contents of the file will be read from standard input and the editor will
not be launched. In this mode, the old contents of the file are automatically replaced. This is
useful to "edit" configuration from scripts, especially so that drop-in directories are created and
populated in one go.

Multiple drop-ins may be "edited" in this mode with --drop-in=, and the same contents will be written
to all of them. Otherwise exactly one main configuration file is expected.

Added in version 257.

--no-ask-password
Do not query the user for authentication for privileged operations.

--json=MODE
Shows output formatted as JSON. Expects one of "short" (for the shortest possible output without any
redundant whitespace or line breaks), "pretty" (for a pretty version of the same, with indentation
and line breaks) or "off" (to turn off JSON output, the default).

-h, --help
Print a short help text and exit.

--version
Print a short version string and exit.

--no-legend
Do not print the legend, i.e. column headers and the footer with hints.

--no-pager
Do not pipe output into a pager.

EXIT STATUS

       On success, 0 is returned, a non-zero failure code otherwise.

NOTES

        1. RFC 3484
           https://tools.ietf.org/html/rfc3484

systemd 257.4                                                                                      NETWORKCTL(1)

NAME

SYNOPSIS

DESCRIPTION

COMMANDS

OPTIONS

EXIT STATUS

SEE ALSO

NOTES