-<?xml version='1.0'?> <!--*- Mode: nxml; nxml-child-indent: 2; indent-tabs-mode: nil -*-->
-<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
+<?xml version='1.0'?>
+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
<!--
SPDX-License-Identifier: LGPL-2.1+
- This file is part of systemd.
-
- Copyright 2014 Vinay Kulkarni
+ Copyright © 2014 Vinay Kulkarni
-->
<refentry id="networkd.conf" conditional='ENABLE_NETWORKD'
<refentryinfo>
<title>networkd.conf</title>
<productname>systemd</productname>
-
- <authorgroup>
- <author>
- <contrib>Developer</contrib>
- <firstname>Vinay</firstname>
- <surname>Kulkarni</surname>
- <email>kulkarniv@vmware.com</email>
- </author>
- </authorgroup>
</refentryinfo>
<refmeta>
<para>The following values are understood:
<variablelist>
<varlistentry>
- <term><option>vendor</option> </term>
+ <term><option>vendor</option></term>
<listitem><para>If <literal>DUIDType=vendor</literal>, then the DUID value will be generated using
<literal>43793</literal> as the vendor identifier (systemd) and hashed contents of
<citerefentry><refentrytitle>machine-id</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
</varlistentry>
<varlistentry>
- <term><option>link-layer-time</option> </term>
- <term><option>link-layer</option> </term>
- <term><option>uuid</option> </term>
- <listitem><para>Those values are parsed and can be used to set the DUID type
- field, but DUID contents must be provided using <varname>DUIDRawData=</varname>.
+ <term><option>uuid</option></term>
+ <listitem><para>If <literal>DUIDType=uuid</literal>, and <varname>DUIDRawData=</varname> is not set,
+ then the product UUID is used as a DUID value. If a system does not have valid product UUID, then
+ an application-specific
+ <citerefentry><refentrytitle>machine-id</refentrytitle><manvolnum>5</manvolnum></citerefentry>
+ is used as a DUID value. About the application-specific machine ID, see
+ <citerefentry><refentrytitle>sd_id128_get_machine_app_specific</refentrytitle><manvolnum>3</manvolnum></citerefentry>.
+ </para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><option>link-layer-time[:<replaceable>TIME</replaceable>]</option></term>
+ <term><option>link-layer</option></term>
+ <listitem><para>If <literal>link-layer-time</literal> or <literal>link-layer</literal> is specified,
+ then the MAC address of the interface is used as a DUID value. The value <literal>link-layer-time</literal>
+ can take additional time value after a colon, e.g. <literal>link-layer-time:2018-01-23 12:34:56 UTC</literal>.
+ The default time value is <literal>2000-01-01 00:00:00 UTC</literal>.
</para></listitem>
</varlistentry>
</variablelist>
byte separated by <literal>:</literal>. The DUID that is sent is composed of the DUID type specified by
<varname>DUIDType=</varname> and the value configured here.</para>
- <para>The DUID value specified here overrides the DUID that systemd-networkd generates using the machine-id
- from the <filename>/etc/machine-id</filename> file. To configure DUID per-network, see
+ <para>The DUID value specified here overrides the DUID that
+ <citerefentry><refentrytitle>systemd-networkd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>
+ generates from the machine ID. To configure DUID per-network, see
<citerefentry><refentrytitle>systemd.network</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
The configured DHCP DUID should conform to the specification in
<ulink url="http://tools.ietf.org/html/rfc3315#section-9">RFC 3315</ulink>,
<para>
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
<citerefentry><refentrytitle>systemd.network</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>machine-id</refentrytitle><manvolnum>1</manvolnum></citerefentry>
+ <citerefentry><refentrytitle>systemd-networkd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>machine-id</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>sd_id128_get_machine_app_specific</refentrytitle><manvolnum>3</manvolnum></citerefentry>
</para>
</refsect1>