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NETWORKCTL(1) networkctl NETWORKCTL(1)

networkctl - Query the status of network links

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

networkctl may be used to introspect 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.

The following options are understood:
-a --all
Show all links with status.
-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.

The following commands are understood:
list [LINK...]
Show a list of existing links and their status. 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:
off
the device is powered down
no-carrier
the device is powered up, but it does not yet have a carrier
dormant
the device has a carrier, but is not yet ready for normal traffic
carrier
the link has a carrier
degraded
the link has carrier and addresses valid on the local link configured
routable
the link has carrier and routable address configured
The setup status is one of the following:
pending
udev is still processing the link, we don't yet know if we will manage it
failed
networkd failed to manage the link
configuring
in the process of retrieving configuration or configuring the link
configured
link configured successfully
unmanaged
networkd is not handling the link
linger
the link is gone, but has not yet been dropped by networkd
status [LINK...]
Show information about the specified links: type, state, kernel module driver, hardware and IP address, configured DNS servers, etc.
When no links are specified, an overall network status is shown. Also see the option --all.
Produces output similar to:
●      State: routable
     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
lldp [LINK...]
Show discovered LLDP (Link Layer Discovery Protocol) neighbors. If one or more link names 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.
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

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

systemd-networkd.service(8), systemd.network(5), systemd.netdev(5), ip(8)

1.
RFC 3484
https://tools.ietf.org/html/rfc3484
systemd 241