+<?xml version='1.0'?> <!--*-nxml-*-->
+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
+ "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
+
+<!--
+ This file is part of systemd.
+
+ Copyright 2013 Tom Gundersen
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+-->
+
+<refentry id="systemd-networkd.service">
+
+ <refentryinfo>
+ <title>systemd-networkd.service</title>
+ <productname>systemd</productname>
+
+ <authorgroup>
+ <author>
+ <contrib>Developer</contrib>
+ <firstname>Tom</firstname>
+ <surname>Gundersen</surname>
+ <email>teg@jklm.no</email>
+ </author>
+ </authorgroup>
+ </refentryinfo>
+
+ <refmeta>
+ <refentrytitle>systemd-networkd.service</refentrytitle>
+ <manvolnum>8</manvolnum>
+ </refmeta>
+
+ <refnamediv>
+ <refname>systemd-networkd.service</refname>
+ <refname>systemd-networkd</refname>
+ <refpurpose>Network manager</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <para><filename>systemd-networkd.service</filename></para>
+ <para><filename>/usr/lib/systemd/systemd-networkd</filename></para>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para><command>systemd-networkd</command> is a system
+ service that manages networks. It detects and configures
+ network devices as they appear.</para>
+
+ <para>Network devices are managed by networkd only if they
+ have the udev tag <literal>systemd-networkd</literal>.</para>
+
+ <para>Network configurations applied before networkd is started
+ are not removed, and configuration applied by networkd are not
+ removed when networkd exits. This ensures restarting networkd
+ does not cut the network connection, and in particular that it
+ is safe to transition between the initrd and the real root,
+ and back.</para>
+ </refsect1>
+
+ <refsect1><title>Network Configuration</title>
+ <para>The network files are read from the files located in the
+ system network directory <filename>/usr/lib/systemd/network</filename>,
+ the volatile runtime network directory
+ <filename>/run/systemd/network</filename> and the local administration
+ network directory <filename>/etc/systemd/network</filename>.
+ All link files are collectively sorted and processed in lexical order,
+ regardless of the directories in which they live. However, files with
+ identical filenames replace each other. Files in
+ <filename>/etc</filename> have the highest priority, files in
+ <filename>/run</filename> take precedence over files with the same
+ name in <filename>/lib</filename>. This can be used to override a
+ system-supplied network file with a local file if needed; a symlink in
+ <filename>/etc</filename> with the same name as a network file in
+ <filename>/lib</filename>, pointing to <filename>/dev/null</filename>,
+ disables the network file entirely. Network files must have the extension
+ <filename>.network</filename>; other extensions are ignored.</para>
+
+ <para>The network file contains a <literal>[Match]</literal> section,
+ which determines if a given network file may be applied to a given device;
+ and a <literal>[Network]</literal> section specifying how the device should
+ be configured. The first (in lexical order) of the network files that
+ matches a given device is applied.</para>
+
+ <para>A network file is said to match a device if each of the entries in the
+ <literal>[Match]</literal> section matches, or if the section is empty.
+ The following keys are accepted:</para>
+
+ <variablelist class='network-directives'>
+ <varlistentry>
+ <term><varname>MACAddress</varname></term>
+ <listitem>
+ <para>The hardware address.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>Path</varname></term>
+ <listitem>
+ <para>The persistent path, as exposed by the udev
+ property <literal>ID_PATH</literal>.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>Driver</varname></term>
+ <listitem>
+ <para>The driver currently bound to the device, as
+ exposed by the udev property <literal>DRIVER</literal>.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>Type</varname></term>
+ <listitem>
+ <para>The device type, as exposed by the udev property
+ <literal>DEVTYPE</literal>.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>Name</varname></term>
+ <listitem>
+ <para>The device name, as exposed by the udev property
+ <literal>INTERFACE</literal>.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+
+ <para>The <literal>[Network]</literal> section accepts the following keys:</para>
+
+ <variablelist class='network-directives'>
+ <varlistentry>
+ <term><varname>Description</varname></term>
+ <listitem>
+ <para>A description of the device. This is only used for
+ presentation purposes.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>Address</varname></term>
+ <listitem>
+ <para>A static IPv4 or IPv6 address and its prefix length,
+ separated by a '/' character. The format of the address must
+ be as described in
+ <citerefentry><refentrytitle>inet_pton</refentrytitle><manvolnum>3</manvolnum></citerefentry>
+ .</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>Gateway</varname></term>
+ <listitem>
+ <para>The gateway address, which must be in the format described in
+ <citerefentry><refentrytitle>inet_pton</refentrytitle><manvolnum>3</manvolnum></citerefentry>
+ .</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>See Also</title>
+ <para>
+ <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>udev</refentrytitle><manvolnum>7</manvolnum></citerefentry>,
+ </para>
+ </refsect1>
+
+</refentry>
~ianmdlvl / elogind.git / commitdiff