2016-03-31 02:33:55 +03:00
<?xml version='1.0'?> <!-- * - Mode: nxml; nxml - child - indent: 2; indent - tabs - mode: nil - * -->
< !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 2014 Vinay Kulkarni
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: / / w w w . g n u . o r g / l i c e n s e s /> .
-->
<refentry id= "networkd.conf" conditional= 'ENABLE_NETWORKD'
xmlns:xi="http://www.w3.org/2001/XInclude">
<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 >
<refentrytitle > networkd.conf</refentrytitle>
<manvolnum > 5</manvolnum>
</refmeta>
<refnamediv >
<refname > networkd.conf</refname>
<refname > networkd.conf.d</refname>
<refpurpose > Global Network configuration files</refpurpose>
</refnamediv>
<refsynopsisdiv >
<para > <filename > /etc/systemd/networkd.conf</filename> </para>
<para > <filename > /etc/systemd/networkd.conf.d/*.conf</filename> </para>
<para > <filename > /usr/lib/systemd/networkd.conf.d/*.conf</filename> </para>
</refsynopsisdiv>
<refsect1 >
<title > Description</title>
<para > These configuration files control global network parameters.
For e.g. DHCP Unique Identifier (DUID).</para>
</refsect1>
<xi:include href= "standard-conf.xml" xpointer= "main-conf" />
<refsect1 >
<title > [DUID] Section Options</title>
2016-04-06 13:37:01 +03:00
<para > This section configures the DHCP Unique Identifier (DUID) value used by DHCP
2016-03-31 02:33:55 +03:00
protocol. DHCPv6 client protocol sends the DHCP Unique Identifier and the interface
Identity Association Identifier (IAID) to a DHCP server when acquiring a dynamic IPv6
address. DHCPv4 client protocol sends IAID and DUID to the DHCP server when acquiring
a dynamic IPv4 address if <option > ClientIdentifier=duid</option> . IAID and DUID allows
a DHCP server to uniquely identify the machine and the interface requesting a DHCP IP.
To configure IAID and ClientIdentifier, see <citerefentry > <refentrytitle > systemd.network
</refentrytitle> <manvolnum > 5</manvolnum> </citerefentry> .</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 <citerefentry > <refentrytitle > systemd.network
</refentrytitle> <manvolnum > 5</manvolnum> </citerefentry> .</para>
<para > The configured DHCP DUID should conform to the specification in
<ulink url= "http://tools.ietf.org/html/rfc3315#section-9" > RFC 3315</ulink> ,
<ulink url= "http://tools.ietf.org/html/rfc6355" > RFC 6355</ulink> . To configure IAID, see
<citerefentry > <refentrytitle > systemd.network</refentrytitle> <manvolnum > 5</manvolnum>
</citerefentry> .</para>
<para > The following options are available in <literal > [DUID]</literal> section:</para>
<variablelist class= 'network-directives' >
<varlistentry >
<term > <varname > RawData=</varname> </term>
<listitem > <para > Specifies the DUID bytes as a single newline-terminated, hexadecimal
string, with each byte separated by a ':'.</para> </listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1 >
<title > See Also</title>
<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>
</para>
</refsect1>
</refentry>