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

Provided by: systemd_255.4-1ubuntu8_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 CHASSIS ID SYSTEM NAME CAPS PORT ID PORT DESCRIPTION
enp0s25 00:e0:4c:00:00:00 GS1900 ..b........ 2 Port #2

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 neighbors 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 .netdev file is found, then the
corresponding netdev is created. Note that even if an existing .netdev is modified or
removed, systemd-networkd does not update or remove the netdev. If a new, modified or
removed .network file is found, then all interfaces which match 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/. 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) or ":link", 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.

Added in version 254.

cat FILE|@DEVICE...
Show network configuration files. This command honors the "@" prefix in the same way
as edit.

Added in version 254.

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, systemd-networkd.service(8) or systemd-udevd.service(8) will not
be reloaded after the editing finishes.

Added in version 254.

--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

NAME

SYNOPSIS

DESCRIPTION

COMMANDS

OPTIONS

EXIT STATUS

SEE ALSO

NOTES