<filename>/usr/lib</filename>, pointing to <filename>/dev/null</filename>,
disables the configuration file entirely.</para>
+ </refsect1>
+
+ <refsect1>
+ <title>[Match] Section Options</title>
+
<para>The network file contains a <literal>[Match]</literal> section,
which determines if a given network file may be applied to a given device;
and a <literal>[Network]</literal> section specifying how the device should
</varlistentry>
</variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>[Network] Section Options</title>
+
<para>The <literal>[Network]</literal> section accepts the following keys:</para>
<variablelist class='network-directives'>
<varlistentry>
<term><varname>DHCP=</varname></term>
<listitem>
- <para>A boolean. When true, enables basic DHCPv4 support.</para>
+ <para>Enables DHCPv4 and/or DHCPv6 support. Accepts
+ <literal>both</literal>, <literal>none</literal>,
+ <literal>v4</literal> or <literal>v6</literal>.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>DHCPServer=</varname></term>
+ <listitem>
+ <para>A boolean. Enables a basic DHCPv4 server on the
+ device. Mostly useful for handing out leases to container
+ instances.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><varname>IPv4LL=</varname></term>
<listitem>
<para>A boolean. When true, enables IPv4 link-local support.
- If <literal>DHCP=</literal> is also true, acquiring DHCP address
- will deprecate previously acquired IPv4 link-local address or
- stop acquiring process if there hasn't been one acquired before.
</para>
</listitem>
</varlistentry>
+ <varlistentry>
+ <term><varname>IPv4LLRoute=</varname></term>
+ <listitem>
+ <para>A boolean. When true, sets up the route needed for
+ non-IPv4LL hosts to communicate with IPv4LL-only hosts. Defaults
+ to true.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>LLMNR=</varname></term>
+ <listitem>
+ <para>A boolean or <literal>resolve</literal>. When true, enables
+ Link-Local Multicast Name Resolution on the link, when set to
+ <literal>resolve</literal> only resolution is enabled, but not
+ announcement. Defaults to true.</para>
+ </listitem>
+ </varlistentry>
<varlistentry>
<term><varname>Address=</varname></term>
<listitem>
an Address key (see below). This option may be specified
more than once.
</para>
+
+ <para>If the specified
+ address is 0.0.0.0
+ (for IPv4) or [::]
+ (for IPv6), a new
+ address range of the
+ requested size is
+ automatically
+ allocated from a
+ system-wide pool of
+ unused ranges. The
+ allocated range is
+ checked against all
+ current network
+ interfaces and all
+ known network
+ configuration files to
+ avoid address range
+ conflicts. The default
+ system-wide pool
+ consists of
+ 192.168.0.0/16,
+ 172.16.0.0/12 and
+ 10.0.0.0/8 for IPv4,
+ and fc00::/7 for
+ IPv6. This
+ functionality is
+ useful to manage a
+ large number of
+ dynamically created
+ network interfaces
+ with the same network
+ configuration and
+ automatic address
+ range
+ assignment.</para>
+
</listitem>
</varlistentry>
<varlistentry>
This option may be specified more than once.</para>
</listitem>
</varlistentry>
+<!-- TODO: document NTP= option when it is actually used somewhere -->
<varlistentry>
<term><varname>Bridge=</varname></term>
<listitem>
may be specified more than once.</para>
</listitem>
</varlistentry>
+ <varlistentry>
+ <term><varname>VXLAN=</varname></term>
+ <listitem>
+ <para>The name of a VXLAN to create on the link. This option
+ may be specified more than once.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>Tunnel=</varname></term>
+ <listitem>
+ <para>The name of a Tunnel to create on the link. This option
+ may be specified more than once.</para>
+ </listitem>
+ </varlistentry>
</variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>[Address] Section Options</title>
+
<para>An <literal>[Address]</literal> section accepts the following keys.
Specify several <literal>[Address]</literal> sections to configure several
addresses.</para>
<para>As in the <literal>[Network]</literal> section. This key is mandatory.</para>
</listitem>
</varlistentry>
+ <varlistentry>
+ <term><varname>Peer=</varname></term>
+ <listitem>
+ <para>The peer address in a point-to-point connection. Accepts the same format as
+ the <literal>Address</literal> key.</para>
+ </listitem>
+ </varlistentry>
<varlistentry>
<term><varname>Broadcast=</varname></term>
<listitem>
<para>The broadcast address, which must be in the format described in
- <citerefentry><refentrytitle>inet_pton</refentrytitle><manvolnum>3</manvolnum></citerefentry>
- . This key only applies to IPv4 addresses. If it is not given, it is
+ <citerefentry><refentrytitle>inet_pton</refentrytitle><manvolnum>3</manvolnum></citerefentry>.
+ This key only applies to IPv4 addresses. If it is not given, it is
derived from the <literal>Address</literal> key.</para>
</listitem>
</varlistentry>
</listitem>
</varlistentry>
</variablelist>
+ </refsect1>
+ <refsect1>
+ <title>[Route] Section Options</title>
<para>The <literal>[Route]</literal> section accepts the following keys. Specify
several <literal>[Route]</literal> sections to configure several routes.</para>
<term><varname>Destination=</varname></term>
<listitem>
<para>The destination prefix of the route. Possibly followed by a slash and the
- prefixlength, if ommitted a full-length host route is assumed.</para>
+ prefixlength. If ommitted, a full-length host route is assumed.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>Metric=</varname></term>
+ <listitem>
+ <para>The metric of the route. An unsigned integer</para>
</listitem>
</varlistentry>
</variablelist>
+ </refsect1>
- <para>The <literal>[DHCPv4]</literal> section accepts the following keys:</para>
+ <refsect1>
+ <title>[DHCP] Section Options</title>
+ <para>The <literal>[DHCP]</literal> section accepts the following keys:</para>
<variablelist class='network-directives'>
<varlistentry>
be used on the current link. Defaults to false.</para>
</listitem>
</varlistentry>
+ <varlistentry>
+ <term><varname>SendHostname=</varname></term>
+ <listitem>
+ <para>When true (the default), the machine's hostname will be sent to the DHCP
+ server</para>
+ </listitem>
+ </varlistentry>
<varlistentry>
<term><varname>UseHostname=</varname></term>
<listitem>
will be used as the transient hostname.</para>
</listitem>
</varlistentry>
+ <varlistentry>
+ <term><varname>UseRoutes=</varname></term>
+ <listitem>
+ <para>When true (the default), the static routes will be requested from the DHCP server
+ and added to the routing table with metric of 1024.</para>
+ </listitem>
+ </varlistentry>
<varlistentry>
<term><varname>CriticalConnection=</varname></term>
<listitem>
if, say, the root filesystem relies on this connection. Defaults to false.</para>
</listitem>
</varlistentry>
+ <varlistentry>
+ <term><varname>VendorClassIdentifier=</varname></term>
+ <listitem>
+ <para>The vendor class identifier used to identify vendor type and configuration.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>RequestBroadcast=</varname></term>
+ <listitem>
+ <para>Request the server to use broadcast messages before the IP address has been
+ configured. This is necessary for devices that cannot receive RAW packets, or that
+ cannot receive packets at all before an IP address has been configured. On the other
+ hand, this must not be enabled on networks where broadcasts are filtered out.</para>
+ </listitem>
+ </varlistentry>
</variablelist>
</refsect1>
Name=en*
[Network]
-DHCP=yes</programlisting>
+DHCP=both</programlisting>
</example>
<example>
[Network]
Bridge=bridge0</programlisting>
</example>
+ <example>
+ <title>/etc/systemd/network/ipip.network</title>
+
+ <programlisting>[Match]
+Name=em1
+
+[Network]
+Tunnel=ipip-tun</programlisting>
+ </example>
+
+ <example>
+ <title>/etc/systemd/network/sit.network</title>
+
+ <programlisting>[Match]
+Name=em1
+
+[Network]
+Tunnel=sit-tun</programlisting>
+ </example>
+
+ <example>
+ <title>/etc/systemd/network/gre.network</title>
+
+ <programlisting>[Match]
+Name=em1
+
+[Network]
+Tunnel=gre-tun</programlisting>
+ </example>
+
+ <example>
+ <title>/etc/systemd/network/vti.network</title>
+
+ <programlisting>[Match]
+Name=em1
+
+[Network]
+Tunnel=vti-tun</programlisting>
+ </example>
</refsect1>
<refsect1>
~ianmdlvl / elogind.git / blobdiff