179 lines
8.1 KiB
XML
179 lines
8.1 KiB
XML
<?xml version='1.0'?>
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//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-or-later
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Copyright © 2014 Vinay Kulkarni
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-->
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<refentry id="networkd.conf" conditional='ENABLE_NETWORKD'
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xmlns:xi="http://www.w3.org/2001/XInclude">
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<refentryinfo>
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<title>networkd.conf</title>
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<productname>systemd</productname>
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</refentryinfo>
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<refmeta>
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<refentrytitle>networkd.conf</refentrytitle>
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<manvolnum>5</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>networkd.conf</refname>
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<refname>networkd.conf.d</refname>
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<refpurpose>Global Network configuration files</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<para><filename>/etc/systemd/networkd.conf</filename></para>
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<para><filename>/etc/systemd/networkd.conf.d/*.conf</filename></para>
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<para><filename>/usr/lib/systemd/networkd.conf.d/*.conf</filename></para>
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</refsynopsisdiv>
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<refsect1>
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<title>Description</title>
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<para>These configuration files control global network parameters.
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Currently the DHCP Unique Identifier (DUID).</para>
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</refsect1>
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<xi:include href="standard-conf.xml" xpointer="main-conf" />
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<refsect1>
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<title>[Network] Section Options</title>
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<para>The following options are available in the [Network] section:</para>
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<variablelist class='network-directives'>
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<varlistentry>
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<term><varname>SpeedMeter=</varname></term>
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<listitem><para>Takes a boolean. If set to yes, then <command>systemd-networkd</command>
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measures the traffic of each interface, and
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<command>networkctl status <replaceable>INTERFACE</replaceable></command> shows the measured speed.
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Defaults to no.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>SpeedMeterIntervalSec=</varname></term>
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<listitem><para>Specifies the time interval to calculate the traffic speed of each interface.
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If <varname>SpeedMeter=no</varname>, the value is ignored. Defaults to 10sec.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>ManageForeignRoutes=</varname></term>
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<listitem><para>A boolean. When true, <command>systemd-networkd</command> will store any routes
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configured by other tools in its memory. When false, <command>systemd-networkd</command> will
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not manage the foreign routes, thus they are kept even if <varname>KeepConfiguration=</varname>
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is false. Defaults to yes.</para></listitem>
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</varlistentry>
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</variablelist>
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</refsect1>
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<refsect1>
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<title>[DHCP] Section Options</title>
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<para>This section configures the DHCP Unique Identifier (DUID) value used by DHCP
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protocol. DHCPv6 client protocol sends the DHCP Unique Identifier and the interface
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Identity Association Identifier (IAID) to a DHCP server when acquiring a dynamic IPv6
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address. DHCPv4 client protocol sends IAID and DUID to the DHCP server when acquiring
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a dynamic IPv4 address if <option>ClientIdentifier=duid</option>. IAID and DUID allows
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a DHCP server to uniquely identify the machine and the interface requesting a DHCP IP.
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To configure IAID and ClientIdentifier, see
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<citerefentry><refentrytitle>systemd.network</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
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</para>
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<para>The following options are understood:</para>
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<variablelist class='network-directives'>
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<varlistentry>
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<term><varname>DUIDType=</varname></term>
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<listitem><para>Specifies how the DUID should be generated. See
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<ulink url="https://tools.ietf.org/html/rfc3315#section-9">RFC 3315</ulink>
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for a description of all the options.</para>
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<para>The following values are understood:
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<variablelist>
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<varlistentry>
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<term><option>vendor</option></term>
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<listitem><para>If <literal>DUIDType=vendor</literal>, then the DUID value will be generated using
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<literal>43793</literal> as the vendor identifier (systemd) and hashed contents of
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<citerefentry><refentrytitle>machine-id</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
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This is the default if <varname>DUIDType=</varname> is not specified.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>uuid</option></term>
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<listitem><para>If <literal>DUIDType=uuid</literal>, and <varname>DUIDRawData=</varname> is not set,
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then the product UUID is used as a DUID value. If a system does not have valid product UUID, then
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an application-specific
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<citerefentry><refentrytitle>machine-id</refentrytitle><manvolnum>5</manvolnum></citerefentry>
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is used as a DUID value. About the application-specific machine ID, see
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<citerefentry><refentrytitle>sd_id128_get_machine_app_specific</refentrytitle><manvolnum>3</manvolnum></citerefentry>.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>link-layer-time[:<replaceable>TIME</replaceable>]</option></term>
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<term><option>link-layer</option></term>
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<listitem><para>If <literal>link-layer-time</literal> or <literal>link-layer</literal> is specified,
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then the MAC address of the interface is used as a DUID value. The value <literal>link-layer-time</literal>
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can take additional time value after a colon, e.g. <literal>link-layer-time:2018-01-23 12:34:56 UTC</literal>.
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The default time value is <literal>2000-01-01 00:00:00 UTC</literal>.
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</para></listitem>
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</varlistentry>
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</variablelist>
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</para>
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<para>In all cases, <varname>DUIDRawData=</varname> can be used to override the
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actual DUID value that is used.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>DUIDRawData=</varname></term>
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<listitem><para>Specifies the DHCP DUID value as a single newline-terminated, hexadecimal string, with each
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byte separated by <literal>:</literal>. The DUID that is sent is composed of the DUID type specified by
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<varname>DUIDType=</varname> and the value configured here.</para>
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<para>The DUID value specified here overrides the DUID that
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<citerefentry><refentrytitle>systemd-networkd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>
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generates from the machine ID. To configure DUID per-network, see
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<citerefentry><refentrytitle>systemd.network</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
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The configured DHCP DUID should conform to the specification in
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<ulink url="http://tools.ietf.org/html/rfc3315#section-9">RFC 3315</ulink>,
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<ulink url="http://tools.ietf.org/html/rfc6355">RFC 6355</ulink>. To configure IAID, see
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<citerefentry><refentrytitle>systemd.network</refentrytitle><manvolnum>5</manvolnum>
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</citerefentry>.</para>
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<example>
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<title>A <option>DUIDType=vendor</option> with a custom value</title>
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<programlisting>DUIDType=vendor
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DUIDRawData=00:00:ab:11:f9:2a:c2:77:29:f9:5c:00</programlisting>
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<para>This specifies a 14 byte DUID, with the type DUID-EN (<literal>00:02</literal>), enterprise number
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43793 (<literal>00:00:ab:11</literal>), and identifier value <literal>f9:2a:c2:77:29:f9:5c:00</literal>.
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</para>
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</example>
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</listitem>
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</varlistentry>
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</variablelist>
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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.network</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd-networkd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>machine-id</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>sd_id128_get_machine_app_specific</refentrytitle><manvolnum>3</manvolnum></citerefentry>
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</para>
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</refsect1>
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</refentry>
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