systemd-networkd.service(8) — Linux manual page

SYSTEMD-....SERVICE(8)  systemd-networkd.service  SYSTEMD-....SERVICE(8)

NAME

       systemd-networkd.service, systemd-networkd - Network manager

SYNOPSIS

       systemd-networkd.service

       /usr/lib/systemd/systemd-networkd

DESCRIPTION

       systemd-networkd is a system service that manages networks. It
       detects and configures network devices as they appear, as well as
       creating virtual network devices.

       To configure low-level link settings independently of networks,
       see systemd.link(5).

       systemd-networkd will create network devices based on the
       configuration in systemd.netdev(5) files, respecting the [Match]
       sections in those files.

       systemd-networkd will manage network addresses and routes for any
       link for which it finds a .network file with an appropriate
       [Match] section, see systemd.network(5). For those links, it will
       flush existing network addresses and routes when bringing up the
       device. Any links not matched by one of the .network files will
       be ignored. It is also possible to explicitly tell
       systemd-networkd to ignore a link by using Unmanaged=yes option,
       see systemd.network(5).

       When systemd-networkd exits, it generally leaves existing network
       devices and configuration intact. This makes it possible to
       transition from the initrd and to restart the service without
       breaking connectivity. This also means that when configuration is
       updated and systemd-networkd is restarted, netdev interfaces for
       which configuration was removed will not be dropped, and may need
       to be cleaned up manually.

       systemd-networkd may be introspected and controlled at runtime
       using networkctl(1).

CONFIGURATION FILES

       The configuration files are read from the files located in the
       system network directory /usr/lib/systemd/network, the volatile
       runtime network directory /run/systemd/network and the local
       administration network directory /etc/systemd/network.

       Networks are configured in .network files, see
       systemd.network(5), and virtual network devices are configured in
       .netdev files, see systemd.netdev(5).

SEE ALSO

       networkctl(1), systemd(1), systemd.link(5), systemd.network(5),
       systemd.netdev(5), systemd-networkd-wait-online.service(8),
       systemd-network-generator.service(8)

COLOPHON

       This page is part of the systemd (systemd system and service
       manager) project.  Information about the project can be found at
       ⟨http://www.freedesktop.org/wiki/Software/systemd⟩.  If you have
       a bug report for this manual page, see
       ⟨http://www.freedesktop.org/wiki/Software/systemd/#bugreports⟩.
       This page was obtained from the project's upstream Git repository
       ⟨https://github.com/systemd/systemd.git⟩ on 2024-06-14.  (At that
       time, the date of the most recent commit that was found in the
       repository was 2024-06-13.)  If you discover any rendering
       problems in this HTML version of the page, or you believe there
       is a better or more up-to-date source for the page, or you have
       corrections or improvements to the information in this COLOPHON
       (which is not part of the original manual page), send a mail to
       man-pages@man7.org

systemd 257~devel                                 SYSTEMD-....SERVICE(8)

Pages that refer to this page: networkctl(1), resolvectl(1), systemd-nspawn(1), systemd-vmspawn(1), hostname(5), networkd.conf(5), org.freedesktop.network1(5), org.freedesktop.resolve1(5), resolved.conf(5), systemd.link(5), systemd.netdev(5), systemd.network(5), timesyncd.conf(5), systemd.directives(7), systemd.index(7), systemd.system-credentials(7), systemd-networkd-wait-online.service(8), systemd-network-generator.service(8), systemd-resolved.service(8), systemd-timesyncd.service(8)

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