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1 | <?xml version='1.0'?> <!--*- Mode: nxml; nxml-child-indent: 2; indent-tabs-mode: nil -*--> |
2 | <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" | |
3 | "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd"> | |
4 | ||
5 | <!-- | |
6 | This file is part of systemd. | |
7 | ||
8 | Copyright 2014 Vinay Kulkarni | |
9 | ||
10 | systemd is free software; you can redistribute it and/or modify it | |
11 | under the terms of the GNU Lesser General Public License as published by | |
12 | the Free Software Foundation; either version 2.1 of the License, or | |
13 | (at your option) any later version. | |
14 | ||
15 | systemd is distributed in the hope that it will be useful, but | |
16 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
18 | Lesser General Public License for more details. | |
19 | ||
20 | You should have received a copy of the GNU Lesser General Public License | |
21 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
22 | --> | |
23 | ||
24 | <refentry id="networkd.conf" conditional='ENABLE_NETWORKD' | |
25 | xmlns:xi="http://www.w3.org/2001/XInclude"> | |
26 | <refentryinfo> | |
27 | <title>networkd.conf</title> | |
28 | <productname>systemd</productname> | |
29 | ||
30 | <authorgroup> | |
31 | <author> | |
32 | <contrib>Developer</contrib> | |
33 | <firstname>Vinay</firstname> | |
34 | <surname>Kulkarni</surname> | |
35 | <email>kulkarniv@vmware.com</email> | |
36 | </author> | |
37 | </authorgroup> | |
38 | </refentryinfo> | |
39 | ||
40 | <refmeta> | |
41 | <refentrytitle>networkd.conf</refentrytitle> | |
42 | <manvolnum>5</manvolnum> | |
43 | </refmeta> | |
44 | ||
45 | <refnamediv> | |
46 | <refname>networkd.conf</refname> | |
47 | <refname>networkd.conf.d</refname> | |
48 | <refpurpose>Global Network configuration files</refpurpose> | |
49 | </refnamediv> | |
50 | ||
51 | <refsynopsisdiv> | |
52 | <para><filename>/etc/systemd/networkd.conf</filename></para> | |
53 | <para><filename>/etc/systemd/networkd.conf.d/*.conf</filename></para> | |
54 | <para><filename>/usr/lib/systemd/networkd.conf.d/*.conf</filename></para> | |
55 | </refsynopsisdiv> | |
56 | ||
57 | <refsect1> | |
58 | <title>Description</title> | |
59 | ||
60 | <para>These configuration files control global network parameters. | |
e2e08e77 | 61 | Currently the DHCP Unique Identifier (DUID).</para> |
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62 | |
63 | </refsect1> | |
64 | ||
65 | <xi:include href="standard-conf.xml" xpointer="main-conf" /> | |
66 | ||
67 | <refsect1> | |
e2e08e77 | 68 | <title>[DHCP] Section Options</title> |
413708d1 | 69 | |
95f4c7f5 | 70 | <para>This section configures the DHCP Unique Identifier (DUID) value used by DHCP |
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71 | protocol. DHCPv6 client protocol sends the DHCP Unique Identifier and the interface |
72 | Identity Association Identifier (IAID) to a DHCP server when acquiring a dynamic IPv6 | |
73 | address. DHCPv4 client protocol sends IAID and DUID to the DHCP server when acquiring | |
74 | a dynamic IPv4 address if <option>ClientIdentifier=duid</option>. IAID and DUID allows | |
75 | a DHCP server to uniquely identify the machine and the interface requesting a DHCP IP. | |
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76 | To configure IAID and ClientIdentifier, see |
77 | <citerefentry><refentrytitle>systemd.network</refentrytitle><manvolnum>5</manvolnum></citerefentry>. | |
78 | </para> | |
413708d1 | 79 | |
e2e08e77 | 80 | <para>The following options are understood:</para> |
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81 | |
82 | <variablelist class='network-directives'> | |
e2e08e77 ZJS |
83 | <varlistentry> |
84 | <term><varname>DUIDType=</varname></term> | |
85 | <listitem><para>Specifies how the DUID should be generated. See | |
86 | <ulink url="https://tools.ietf.org/html/rfc3315#section-9">RFC 3315</ulink> | |
87 | for a description of all the options.</para> | |
88 | ||
89 | <para>The following values are understood: | |
90 | <variablelist> | |
91 | <varlistentry> | |
92 | <term><option>vendor</option> </term> | |
93 | <listitem><para>If <literal>DUIDType=vendor</literal>, then the DUID value will be generated using | |
94 | <literal>43793</literal> as the vendor identifier (systemd) and hashed contents of | |
95 | <citerefentry><refentrytitle>machine-id</refentrytitle><manvolnum>5</manvolnum></citerefentry>. | |
96 | This is the default if <varname>DUIDType=</varname> is not specified. | |
97 | </para></listitem> | |
98 | </varlistentry> | |
99 | ||
100 | <varlistentry> | |
101 | <term><option>link-layer-time</option> </term> | |
102 | <term><option>link-layer</option> </term> | |
103 | <term><option>uuid</option> </term> | |
104 | <listitem><para>Those values are parsed and can be used to set the DUID type | |
105 | field, but DUID contents must be provided using <varname>DUIDRawData=</varname>. | |
106 | </para></listitem> | |
107 | </varlistentry> | |
108 | </variablelist> | |
109 | </para> | |
110 | ||
111 | <para>In all cases, <varname>DUIDRawData=</varname> can be used to override the | |
112 | actual DUID value that is used.</para></listitem> | |
113 | </varlistentry> | |
413708d1 | 114 | |
413708d1 | 115 | <varlistentry> |
e2e08e77 ZJS |
116 | <term><varname>DUIDRawData=</varname></term> |
117 | <listitem><para>Specifies the DHCP DUID value as a single newline-terminated, hexadecimal string, with each | |
118 | byte separated by <literal>:</literal>. The DUID that is sent is composed of the DUID type specified by | |
119 | <varname>DUIDType=</varname> and the value configured here.</para> | |
120 | ||
121 | <para>The DUID value specified here overrides the DUID that systemd-networkd generates using the machine-id | |
122 | from the <filename>/etc/machine-id</filename> file. To configure DUID per-network, see | |
2ac5fe95 | 123 | <citerefentry><refentrytitle>systemd.network</refentrytitle><manvolnum>5</manvolnum></citerefentry>. |
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124 | The configured DHCP DUID should conform to the specification in |
125 | <ulink url="http://tools.ietf.org/html/rfc3315#section-9">RFC 3315</ulink>, | |
126 | <ulink url="http://tools.ietf.org/html/rfc6355">RFC 6355</ulink>. To configure IAID, see | |
127 | <citerefentry><refentrytitle>systemd.network</refentrytitle><manvolnum>5</manvolnum> | |
128 | </citerefentry>.</para> | |
129 | ||
130 | <example> | |
131 | <title>A <option>DUIDType=vendor</option> with a custom value</title> | |
132 | ||
133 | <programlisting>DUIDType=vendor | |
134 | DUIDRawData=00:00:ab:11:f9:2a:c2:77:29:f9:5c:00</programlisting> | |
135 | ||
136 | <para>This specifies a 14 byte DUID, with the type DUID-EN (<literal>00:02</literal>), enterprise number | |
137 | 43793 (<literal>00:00:ab:11</literal>), and identifier value <literal>f9:2a:c2:77:29:f9:5c:00</literal>. | |
138 | </para> | |
139 | </example> | |
140 | </listitem> | |
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141 | </varlistentry> |
142 | </variablelist> | |
143 | </refsect1> | |
144 | ||
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145 | <refsect1> |
146 | <title>See Also</title> | |
147 | <para> | |
148 | <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>, | |
149 | <citerefentry><refentrytitle>systemd.network</refentrytitle><manvolnum>5</manvolnum></citerefentry>, | |
150 | <citerefentry><refentrytitle>machine-id</refentrytitle><manvolnum>1</manvolnum></citerefentry> | |
151 | </para> | |
152 | </refsect1> | |
153 | ||
154 | </refentry> |