<?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.netdev" conditional='ENABLE_NETWORKD'> <refentryinfo> <title>systemd.network</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.netdev</refentrytitle> <manvolnum>5</manvolnum> </refmeta> <refnamediv> <refname>systemd.netdev</refname> <refpurpose>Virtual Network Device configuration</refpurpose> </refnamediv> <refsynopsisdiv> <para><filename><replaceable>netdev</replaceable>.netdev</filename></para> </refsynopsisdiv> <refsect1> <title>Description</title> <para>Network setup is performed by <citerefentry><refentrytitle>systemd-networkd</refentrytitle><manvolnum>8</manvolnum></citerefentry>. </para> <para>Virtual Network Device files must have the extension <filename>.netdev</filename>; other extensions are ignored. Virtual network devices are created as soon as networkd is started.</para> <para>The <filename>.netdev</filename> 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 configuration 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>/usr/lib</filename>. This can be used to override a system-supplied configuration file with a local file if needed; a symlink in <filename>/etc</filename> with the same name as a configuration file in <filename>/usr/lib</filename>, pointing to <filename>/dev/null</filename>, disables the configuration file entirely.</para> <para>A virtual network device is only created if the <literal>[Match]</literal> section matches the current environment, or if the section is empty. The following keys are accepted:</para> <variablelist class='network-directives'> <varlistentry> <term><varname>Host=</varname></term> <listitem> <para>Matches against the hostname or machine ID of the host. See <literal>ConditionHost=</literal> in <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry> for details. </para> </listitem> </varlistentry> <varlistentry> <term><varname>Virtualization=</varname></term> <listitem> <para>Checks whether the system is executed in a virtualized environment and optionally test whether it is a specific implementation. See <literal>ConditionVirtualization=</literal> in <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry> for details. </para> </listitem> </varlistentry> <varlistentry> <term><varname>KernelCommandLine=</varname></term> <listitem> <para>Checks whether a specific kernel command line option is set (or if prefixed with the exclamation mark unset). See <literal>ConditionKernelCommandLine=</literal> in <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry> for details. </para> </listitem> </varlistentry> <varlistentry> <term><varname>Architecture=</varname></term> <listitem> <para>Checks whether the system is running on a specific architecture. See <literal>ConditionArchitecture=</literal> in <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry> for details. </para> </listitem> </varlistentry> </variablelist> <para>The <literal>[NetDev]</literal> section accepts the following keys:</para> <variablelist class='network-directives'> <varlistentry> <term><varname>Name=</varname></term> <listitem> <para>The interface name used when creating the netdev. This option is compulsory.</para> </listitem> </varlistentry> <varlistentry> <term><varname>Kind=</varname></term> <listitem> <para>The netdev kind. Currently, <literal>bridge</literal>, <literal>bond</literal>, <literal>vlan</literal> and <literal>macvlan</literal> are supported. This option is compulsory.</para> </listitem> </varlistentry> </variablelist> <para>The <literal>[VLAN]</literal> section only applies for netdevs of kind <literal>vlan</literal>, and accepts the following key:</para> <variablelist class='network-directives'> <varlistentry> <term><varname>Id=</varname></term> <listitem> <para>The VLAN ID to use. An integer in the range 0–4094. This option is compulsory.</para> </listitem> </varlistentry> </variablelist> <para>The <literal>[MACVLAN]</literal> section only applies for netdevs of kind <literal>macvlan</literal>, and accepts the following key:</para> <variablelist class='network-directives'> <varlistentry> <term><varname>Mode=</varname></term> <listitem> <para>The MACVLAN mode to use. The supported options are <literal>private</literal>, <literal>vepa</literal>, <literal>bridge</literal> and <literal>passthru</literal>. </para> </listitem> </varlistentry> </variablelist> </refsect1> <refsect1> <title>Example</title> <example> <title>/etc/systemd/network/bridge.netdev</title> <programlisting>[NetDev] Name=bridge0 Kind=bridge</programlisting> </example> <example> <title>/etc/systemd/network/vlan1.netdev</title> <programlisting>[Match] Virtualization=no [NetDev] Name=vlan1 Kind=vlan [VLAN] Id=1</programlisting> </example> </refsect1> <refsect1> <title>See Also</title> <para> <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>, <citerefentry><refentrytitle>systemd-networkd</refentrytitle><manvolnum>8</manvolnum></citerefentry> </para> </refsect1> </refentry>