systemd-networkd.service, systemd-networkd - Network manager
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 initramfs 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).
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).
networkctl(1), systemd(1), systemd.link(5), systemd.network(5), systemd.netdev(5), systemd-networkd-wait-online.service(8), systemd-network-generator.service(8)
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 2021-08-27. (At that time, the date of the most recent commit that was found in the repository was 2021-08-27.) 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 email@example.com systemd 249 SYSTEMD-NETWORKD.SERVICE(8)
Pages that refer to this page: networkctl(1), resolvectl(1), systemd-nspawn(1), hostname(5), networkd.conf(5), org.freedesktop.resolve1(5), resolved.conf(5), systemd.netdev(5), systemd.network(5), timesyncd.conf(5), systemd-networkd-wait-online.service(8), systemd-network-generator.service(8), systemd-resolved.service(8), systemd-timesyncd.service(8)