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This part of the copyright blurb stems from the GPL use recommendations: https://www.gnu.org/licenses/gpl-howto.en.html The concept appears to originate in times where version control was per file, instead of per tree, and was a way to glue the files together. Ultimately, we nowadays don't live in that world anymore, and this information is entirely useless anyway, as people are very welcome to copy these files into any projects they like, and they shouldn't have to change bits that are part of our copyright header for that. hence, let's just get rid of this old cruft, and shorten our codebase a bit.
142 lines
5.8 KiB
XML
142 lines
5.8 KiB
XML
<?xml version='1.0'?> <!--*- Mode: nxml; nxml-child-indent: 2; indent-tabs-mode: nil -*-->
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//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+
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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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<authorgroup>
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<author>
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<contrib>Developer</contrib>
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<firstname>Vinay</firstname>
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<surname>Kulkarni</surname>
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<email>kulkarniv@vmware.com</email>
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</author>
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</authorgroup>
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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>[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>link-layer-time</option> </term>
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<term><option>link-layer</option> </term>
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<term><option>uuid</option> </term>
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<listitem><para>Those values are parsed and can be used to set the DUID type
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field, but DUID contents must be provided using <varname>DUIDRawData=</varname>.
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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 systemd-networkd generates using the machine-id
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from the <filename>/etc/machine-id</filename> file. 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>machine-id</refentrytitle><manvolnum>1</manvolnum></citerefentry>
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</para>
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</refsect1>
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</refentry>
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