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11a1589223
Files which are installed as-is (any .service and other unit files, .conf files, .policy files, etc), are left as is. My assumption is that SPDX identifiers are not yet that well known, so it's better to retain the extended header to avoid any doubt. I also kept any copyright lines. We can probably remove them, but it'd nice to obtain explicit acks from all involved authors before doing that.
110 lines
4.5 KiB
XML
110 lines
4.5 KiB
XML
<?xml version='1.0'?> <!--*-nxml-*-->
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
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"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
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<!--
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SPDX-License-Identifier: LGPL-2.1+
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This file is part of systemd.
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Copyright 2013 Tom Gundersen
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-->
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<refentry id="systemd-networkd.service" conditional='ENABLE_NETWORKD'>
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<refentryinfo>
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<title>systemd-networkd.service</title>
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<productname>systemd</productname>
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<authorgroup>
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<author>
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<contrib>Developer</contrib>
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<firstname>Tom</firstname>
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<surname>Gundersen</surname>
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<email>teg@jklm.no</email>
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</author>
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</authorgroup>
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</refentryinfo>
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<refmeta>
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<refentrytitle>systemd-networkd.service</refentrytitle>
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<manvolnum>8</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>systemd-networkd.service</refname>
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<refname>systemd-networkd</refname>
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<refpurpose>Network manager</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<para><filename>systemd-networkd.service</filename></para>
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<para><filename>/usr/lib/systemd/systemd-networkd</filename></para>
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</refsynopsisdiv>
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<refsect1>
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<title>Description</title>
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<para><command>systemd-networkd</command> is a system service that
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manages networks. It detects and configures network devices as
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they appear, as well as creating virtual network devices.</para>
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<para>To configure low-level link settings independently of
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networks, see
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<citerefentry><refentrytitle>systemd.link</refentrytitle><manvolnum>5</manvolnum></citerefentry>.</para>
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<para><command>systemd-networkd</command> will create network devices based
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on the configuration in
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<citerefentry><refentrytitle>systemd.netdev</refentrytitle><manvolnum>5</manvolnum></citerefentry>
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files, respecting the [Match] sections in those files.</para>
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<para><command>systemd-networkd</command> will manage network addresses and
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routes for any link for which it finds a <filename>.network</filename> file
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with an appropriate [Match] section, see
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<citerefentry><refentrytitle>systemd.network</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
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For those links, it will flush existing network addresses and routes when
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bringing up the device. Any links not matched by one of the
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<filename>.network</filename> files will be ignored. It is also possible to
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explicitly tell <filename>systemd-networkd</filename> to ignore a link by
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using <varname>Unmanaged=yes</varname> option, see
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<citerefentry><refentrytitle>systemd.network</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
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</para>
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<para>When <filename>systemd-networkd</filename> exits, it generally leaves
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existing network devices and configuration intact. This makes it possible to
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transition from the initrams and to restart the service without breaking
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connectivity. This also means that when configuration is updated and
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<filename>systemd-networkd</filename> is restarted, netdev interfaces for
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which configuration was removed will not be dropped, and may need to be
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cleaned up manually.</para>
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</refsect1>
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<refsect1><title>Configuration Files</title>
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<para>The configuration files are read from the files located in the
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system network directory <filename>/usr/lib/systemd/network</filename>,
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the volatile runtime network directory
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<filename>/run/systemd/network</filename> and the local administration
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network directory <filename>/etc/systemd/network</filename>.</para>
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<para>Networks are configured in <filename>.network</filename>
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files, see
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<citerefentry><refentrytitle>systemd.network</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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and virtual network devices are configured in
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<filename>.netdev</filename> files, see
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<citerefentry><refentrytitle>systemd.netdev</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
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</para>
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</refsect1>
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<refsect1>
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<title>See Also</title>
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<para>
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<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd.link</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd.network</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd.netdev</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd-networkd-wait-online.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>
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</para>
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</refsect1>
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</refentry>
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