summaryrefslogtreecommitdiffstats
path: root/man/systemd.link.xml
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 02:25:50 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 02:25:50 +0000
commit19f4f86bfed21c5326ed2acebe1163f3a83e832b (patch)
treed59b9989ce55ed23693e80974d94c856f1c2c8b1 /man/systemd.link.xml
parentInitial commit. (diff)
downloadsystemd-19f4f86bfed21c5326ed2acebe1163f3a83e832b.tar.xz
systemd-19f4f86bfed21c5326ed2acebe1163f3a83e832b.zip
Adding upstream version 241.upstream/241upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'man/systemd.link.xml')
-rw-r--r--man/systemd.link.xml687
1 files changed, 687 insertions, 0 deletions
diff --git a/man/systemd.link.xml b/man/systemd.link.xml
new file mode 100644
index 0000000..178f9b8
--- /dev/null
+++ b/man/systemd.link.xml
@@ -0,0 +1,687 @@
+<?xml version='1.0'?>
+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
+ "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
+
+<!--
+ SPDX-License-Identifier: LGPL-2.1+
+-->
+
+<refentry id="systemd.link">
+ <refentryinfo>
+ <title>systemd.link</title>
+ <productname>systemd</productname>
+ </refentryinfo>
+
+ <refmeta>
+ <refentrytitle>systemd.link</refentrytitle>
+ <manvolnum>5</manvolnum>
+ </refmeta>
+
+ <refnamediv>
+ <refname>systemd.link</refname>
+ <refpurpose>Network device configuration</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <para><filename><replaceable>link</replaceable>.link</filename></para>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>Network link configuration is performed by the
+ <command>net_setup_link</command> udev builtin.</para>
+
+ <para>The link files are read from the files located in the system
+ network directory <filename>/usr/lib/systemd/network</filename>,
+ the volatile runtime network directory
+ <filename>/run/systemd/network</filename>, and the local
+ administration network directory
+ <filename>/etc/systemd/network</filename>. Link files must have
+ the extension <filename>.link</filename>; other extensions are
+ ignored. All link files are collectively sorted and processed in
+ lexical order, regardless of the directories in which they live.
+ However, files with identical filenames replace each other. Files
+ in <filename>/etc</filename> have the highest priority, files in
+ <filename>/run</filename> take precedence over files with the same
+ name in <filename>/usr/lib</filename>. This can be used to
+ override a system-supplied link file with a local file if needed.
+ As a special case, an empty file (file size 0) or symlink with the
+ same name pointing to <filename>/dev/null</filename> disables the
+ configuration file entirely (it is "masked").</para>
+
+ <para>The link file contains a [Match] section, which determines if a given link file may be applied to a
+ given device, as well as a [Link] section specifying how the device should be configured. The first (in
+ lexical order) of the link files that matches a given device is applied. Note that a default file
+ <filename>99-default.link</filename> is shipped by the system. Any user-supplied
+ <filename>.link</filename> should hence have a lexically earlier name to be considered at all.</para>
+
+ <para>See <citerefentry><refentrytitle>udevadm</refentrytitle><manvolnum>8</manvolnum></citerefentry> for
+ diagnosing problems with <filename>.link</filename> files.</para>
+ </refsect1>
+
+ <refsect1>
+ <title>[Match] Section Options</title>
+
+ <para>A link file is said to match a device if each of the entries in the [Match] section matches, or if
+ the section is empty. The following keys are accepted:</para>
+
+ <variablelist class='network-directives'>
+ <varlistentry>
+ <term><varname>MACAddress=</varname></term>
+ <listitem>
+ <para>A whitespace-separated list of hardware addresses. Use full colon-, hyphen- or dot-delimited hexadecimal. See the example below.
+ This option may appear more than once, in which case the lists are merged. If the empty string is assigned to this option, the list
+ of hardware addresses defined prior to this is reset.</para>
+
+ <para>Example:
+ <programlisting>MACAddress=01:23:45:67:89:ab 00-11-22-33-44-55 AABB.CCDD.EEFF</programlisting></para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>OriginalName=</varname></term>
+ <listitem>
+ <para>A whitespace-separated list of shell-style globs matching
+ the device name, as exposed by the udev property
+ "INTERFACE". This cannot be used to match on names that have
+ already been changed from userspace. Caution is advised when matching on
+ kernel-assigned names, as they are known to be unstable
+ between reboots.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>Path=</varname></term>
+ <listitem>
+ <para>A whitespace-separated list of shell-style globs matching
+ the persistent path, as exposed by the udev property
+ <varname>ID_PATH</varname>.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>Driver=</varname></term>
+ <listitem>
+ <para>A whitespace-separated list of shell-style globs matching the driver currently bound to the
+ device, as exposed by the udev property <varname>DRIVER</varname> of its parent device, or if that
+ is not set, the driver as exposed by <command>ethtool -i</command> of the device itself.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>Type=</varname></term>
+ <listitem>
+ <para>A whitespace-separated list of shell-style globs matching
+ the device type, as exposed by the udev
+ property <varname>DEVTYPE</varname>.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>Host=</varname></term>
+ <listitem>
+ <para>Matches against the hostname or machine
+ ID of the host. See <varname>ConditionHost=</varname> in
+ <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>
+ for details.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>Virtualization=</varname></term>
+ <listitem>
+ <para>Checks whether the system is executed in
+ a virtualized environment and optionally test
+ whether it is a specific implementation. See
+ <varname>ConditionVirtualization=</varname> in
+ <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>
+ for details.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>KernelCommandLine=</varname></term>
+ <listitem>
+ <para>Checks whether a specific kernel command line option
+ is set (or if prefixed with the exclamation mark unset). See
+ <varname>ConditionKernelCommandLine=</varname> in
+ <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>
+ for details.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>KernelVersion=</varname></term>
+ <listitem>
+ <para>Checks whether the kernel version (as reported by <command>uname -r</command>) matches a certain
+ expression (or if prefixed with the exclamation mark does not match it). See
+ <varname>ConditionKernelVersion=</varname> in
+ <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry> for
+ details.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>Architecture=</varname></term>
+ <listitem>
+ <para>Checks whether the system is running on a specific
+ architecture. See <varname>ConditionArchitecture=</varname>
+ in
+ <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>
+ for details.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+
+ </refsect1>
+
+ <refsect1>
+ <title>[Link] Section Options</title>
+
+ <para>The [Link] section accepts the following
+ keys:</para>
+
+ <variablelist class='network-directives'>
+ <varlistentry>
+ <term><varname>Description=</varname></term>
+ <listitem>
+ <para>A description of the device.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>Alias=</varname></term>
+ <listitem>
+ <para>The <varname>ifalias</varname> interface property is set to this value.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>MACAddressPolicy=</varname></term>
+ <listitem>
+ <para>The policy by which the MAC address should be set. The
+ available policies are:
+ </para>
+
+ <variablelist>
+ <varlistentry>
+ <term><option>persistent</option></term>
+ <listitem>
+ <para>If the hardware has a persistent MAC address, as
+ most hardware should, and if it is used by the kernel,
+ nothing is done. Otherwise, a new MAC address is
+ generated which is guaranteed to be the same on every
+ boot for the given machine and the given device, but
+ which is otherwise random. This feature depends on ID_NET_NAME_*
+ properties to exist for the link. On hardware where these
+ properties are not set, the generation of a persistent MAC address
+ will fail.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><option>random</option></term>
+ <listitem>
+ <para>If the kernel is using a random MAC address,
+ nothing is done. Otherwise, a new address is randomly
+ generated each time the device appears, typically at
+ boot. Either way, the random address will have the
+ <literal>unicast</literal> and
+ <literal>locally administered</literal> bits set.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><option>none</option></term>
+ <listitem>
+ <para>Keeps the MAC address assigned by the kernel.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>MACAddress=</varname></term>
+ <listitem>
+ <para>The MAC address to use, if no
+ <varname>MACAddressPolicy=</varname>
+ is specified.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>NamePolicy=</varname></term>
+ <listitem>
+ <para>An ordered, space-separated list of policies by which the interface name should be set.
+ <varname>NamePolicy=</varname> may be disabled by specifying <option>net.ifnames=0</option> on the
+ kernel command line. Each of the policies may fail, and the first successful one is used. The name
+ is not set directly, but is exported to udev as the property <option>ID_NET_NAME</option>, which
+ is, by default, used by a udev rule to set <varname>NAME</varname>. The available policies are:
+ </para>
+
+ <variablelist>
+ <varlistentry>
+ <term><option>kernel</option></term>
+ <listitem>
+ <para>If the kernel claims that the name it has set
+ for a device is predictable, then no renaming is
+ performed.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><option>database</option></term>
+ <listitem>
+ <para>The name is set based on entries in the udev's
+ Hardware Database with the key
+ <varname>ID_NET_NAME_FROM_DATABASE</varname>.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><option>onboard</option></term>
+ <listitem>
+ <para>The name is set based on information given by
+ the firmware for on-board devices, as exported by the
+ udev property <varname>ID_NET_NAME_ONBOARD</varname>.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><option>slot</option></term>
+ <listitem>
+ <para>The name is set based on information given by
+ the firmware for hot-plug devices, as exported by the
+ udev property <varname>ID_NET_NAME_SLOT</varname>.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><option>path</option></term>
+ <listitem>
+ <para>The name is set based on the device's physical
+ location, as exported by the udev property
+ <varname>ID_NET_NAME_PATH</varname>.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><option>mac</option></term>
+ <listitem>
+ <para>The name is set based on the device's persistent
+ MAC address, as exported by the udev property
+ <varname>ID_NET_NAME_MAC</varname>.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><option>keep</option></term>
+ <listitem>
+ <para>If the device already had a name given by userspace (as part of creation of the device
+ or a rename), keep it.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>Name=</varname></term>
+ <listitem>
+ <para>The interface name to use in case all the
+ policies specified in
+ <varname>NamePolicy=</varname> fail, or in case
+ <varname>NamePolicy=</varname> is missing or
+ disabled.</para>
+
+ <para>Note that specifying a name that the kernel might use for another
+ interface (for example <literal>eth0</literal>) is dangerous because the
+ name assignment done by udev will race with the assignment done by the
+ kernel, and only one interface may use the name. Depending on the order of
+ operations, either udev or the kernel will win, making the naming
+ unpredictable. It is best to use some different prefix, for example
+ <literal>internal0</literal>/<literal>external0</literal> or
+ <literal>lan0</literal>/<literal>lan1</literal>/<literal>lan3</literal>.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>MTUBytes=</varname></term>
+ <listitem>
+ <para>The maximum transmission unit in bytes to set for the
+ device. The usual suffixes K, M, G, are supported and are
+ understood to the base of 1024.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>BitsPerSecond=</varname></term>
+ <listitem>
+ <para>The speed to set for the device, the value is rounded
+ down to the nearest Mbps. The usual suffixes K, M, G, are
+ supported and are understood to the base of 1000.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>Duplex=</varname></term>
+ <listitem>
+ <para>The duplex mode to set for the device. The accepted values are <option>half</option> and
+ <option>full</option>.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>AutoNegotiation=</varname></term>
+ <listitem>
+ <para>Takes a boolean. If set to yes, automatic negotiation of transmission parameters is enabled.
+ Autonegotiation is a procedure by which two connected ethernet devices choose
+ common transmission parameters, such as speed, duplex mode, and flow control.
+ When unset, the kernel's default will be used.</para>
+
+ <para>Note that if autonegotiation is enabled, speed and duplex settings are
+ read-only. If autonegotation is disabled, speed and duplex settings are writable
+ if the driver supports multiple link modes.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>WakeOnLan=</varname></term>
+ <listitem>
+ <para>The Wake-on-LAN policy to set for the device. The
+ supported values are:</para>
+
+ <variablelist>
+ <varlistentry>
+ <term><option>phy</option></term>
+ <listitem>
+ <para>Wake on PHY activity.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><option>unicast</option></term>
+ <listitem>
+ <para>Wake on unicast messages.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><option>multicast</option></term>
+ <listitem>
+ <para>Wake on multicast messages.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><option>broadcast</option></term>
+ <listitem>
+ <para>Wake on broadcast messages.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><option>arp</option></term>
+ <listitem>
+ <para>Wake on ARP.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><option>magic</option></term>
+ <listitem>
+ <para>Wake on receipt of a magic packet.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><option>secureon</option></term>
+ <listitem>
+ <para>Enable secureon(tm) password for MagicPacket(tm).
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><option>off</option></term>
+ <listitem>
+ <para>Never wake.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+
+ <para>Defaults to <option>off</option>.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>Port=</varname></term>
+ <listitem>
+ <para>The port option is used to select the device port. The
+ supported values are:</para>
+
+ <variablelist>
+ <varlistentry>
+ <term><option>tp</option></term>
+ <listitem>
+ <para>An Ethernet interface using Twisted-Pair cable as the medium.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><option>aui</option></term>
+ <listitem>
+ <para>Attachment Unit Interface (AUI). Normally used with hubs.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><option>bnc</option></term>
+ <listitem>
+ <para>An Ethernet interface using BNC connectors and co-axial cable.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><option>mii</option></term>
+ <listitem>
+ <para>An Ethernet interface using a Media Independent Interface (MII).</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><option>fibre</option></term>
+ <listitem>
+ <para>An Ethernet interface using Optical Fibre as the medium.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>Advertise=</varname></term>
+ <listitem>
+ <para>This sets what speeds and duplex modes of operation are advertised for auto-negotiation.
+ This implies <literal>AutoNegotiation=yes</literal>. The supported values are:
+
+ <table>
+ <title>Supported advertise values</title>
+ <tgroup cols='3'>
+ <colspec colname='Advertise' />
+ <colspec colname='Speed' />
+ <colspec colname='Duplex Mode' />
+
+ <thead><row>
+ <entry>Advertise</entry>
+ <entry>Speed (Mbps)</entry>
+ <entry>Duplex Mode</entry>
+ </row></thead>
+ <tbody>
+ <row><entry><option>10baset-half</option></entry>
+ <entry>10</entry><entry>half</entry></row>
+
+ <row><entry><option>10baset-full</option></entry>
+ <entry>10</entry><entry>full</entry></row>
+
+ <row><entry><option>100baset-half</option></entry>
+ <entry>100</entry><entry>half</entry></row>
+
+ <row><entry><option>100baset-full</option></entry>
+ <entry>100</entry><entry>full</entry></row>
+
+ <row><entry><option>1000baset-half</option></entry>
+ <entry>1000</entry><entry>half</entry></row>
+
+ <row><entry><option>1000baset-full</option></entry>
+ <entry>1000</entry><entry>full</entry></row>
+
+ <row><entry><option>10000baset-full</option></entry>
+ <entry>10000</entry><entry>full</entry></row>
+
+ <row><entry><option>2500basex-full</option></entry>
+ <entry>2500</entry><entry>full</entry></row>
+
+ <row><entry><option>1000basekx-full</option></entry>
+ <entry>1000</entry><entry>full</entry></row>
+
+ <row><entry><option>10000basekx4-full</option></entry>
+ <entry>10000</entry><entry>full</entry></row>
+
+ <row><entry><option>10000basekr-full</option></entry>
+ <entry>10000</entry><entry>full</entry></row>
+
+ <row><entry><option>10000baser-fec</option></entry>
+ <entry>10000</entry><entry>full</entry></row>
+
+ <row><entry><option>20000basemld2-full</option></entry>
+ <entry>20000</entry><entry>full</entry></row>
+
+ <row><entry><option>20000basekr2-full</option></entry>
+ <entry>20000</entry><entry>full</entry></row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ By default this is unset, i.e. all possible modes will be advertised.
+ This option may be specified more than once, in which case all specified speeds and modes are advertised.
+ If the empty string is assigned to this option, the list is reset, and all prior assignments have no effect.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>TCPSegmentationOffload=</varname></term>
+ <listitem>
+ <para>Takes a boolean. If set to true, the TCP Segmentation Offload (TSO) is enabled.
+ When unset, the kernel's default will be used.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>TCP6SegmentationOffload=</varname></term>
+ <listitem>
+ <para>Takes a boolean. If set to true, the TCP6 Segmentation Offload (tx-tcp6-segmentation) is enabled.
+ When unset, the kernel's default will be used.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>GenericSegmentationOffload=</varname></term>
+ <listitem>
+ <para>Takes a boolean. If set to true, the Generic Segmentation Offload (GSO) is enabled.
+ When unset, the kernel's default will be used.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>GenericReceiveOffload=</varname></term>
+ <listitem>
+ <para>Takes a boolean. If set to true, the Generic Receive Offload (GRO) is enabled.
+ When unset, the kernel's default will be used.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>LargeReceiveOffload=</varname></term>
+ <listitem>
+ <para>Takes a boolean. If set to true, the Large Receive Offload (LRO) is enabled.
+ When unset, the kernel's default will be used.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>RxChannels=</varname></term>
+ <listitem>
+ <para>Sets the number of receive channels (a number between 1 and 4294967295) .</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>TxChannels=</varname></term>
+ <listitem>
+ <para>Sets the number of transmit channels (a number between 1 and 4294967295).</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>OtherChannels=</varname></term>
+ <listitem>
+ <para>Sets the number of other channels (a number between 1 and 4294967295).</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>CombinedChannels=</varname></term>
+ <listitem>
+ <para>Sets the number of combined set channels (a number between 1 and 4294967295).</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Examples</title>
+
+ <example>
+ <title>/usr/lib/systemd/network/99-default.link</title>
+
+ <para>The link file <filename>99-default.link</filename> that is
+ shipped with systemd defines the default naming policy for
+ links.</para>
+
+ <programlisting>[Link]
+NamePolicy=kernel database onboard slot path
+MACAddressPolicy=persistent</programlisting>
+ </example>
+
+ <example>
+ <title>/etc/systemd/network/10-dmz.link</title>
+
+ <para>This example assigns the fixed name
+ <literal>dmz0</literal> to the interface with the MAC address
+ 00:a0:de:63:7a:e6:</para>
+
+ <programlisting>[Match]
+MACAddress=00:a0:de:63:7a:e6
+
+[Link]
+Name=dmz0</programlisting>
+ </example>
+
+ <example>
+ <title>/etc/systemd/network/10-internet.link</title>
+
+ <para>This example assigns the fixed name
+ <literal>internet0</literal> to the interface with the device
+ path <literal>pci-0000:00:1a.0-*</literal>:</para>
+
+ <programlisting>[Match]
+Path=pci-0000:00:1a.0-*
+
+[Link]
+Name=internet0</programlisting>
+ </example>
+
+ <example>
+ <title>/etc/systemd/network/25-wireless.link</title>
+
+ <para>Here's an overly complex example that shows the use of a large number of [Match] and [Link] settings.</para>
+
+ <programlisting>[Match]
+MACAddress=12:34:56:78:9a:bc
+Driver=brcmsmac
+Path=pci-0000:02:00.0-*
+Type=wlan
+Virtualization=no
+Host=my-laptop
+Architecture=x86-64
+
+[Link]
+Name=wireless0
+MTUBytes=1450
+BitsPerSecond=10M
+WakeOnLan=magic
+MACAddress=cb:a9:87:65:43:21</programlisting>
+ </example>
+ </refsect1>
+
+ <refsect1>
+ <title>See Also</title>
+ <para>
+ <citerefentry>
+ <refentrytitle>systemd-udevd.service</refentrytitle><manvolnum>8</manvolnum>
+ </citerefentry>,
+ <citerefentry>
+ <refentrytitle>udevadm</refentrytitle><manvolnum>8</manvolnum>
+ </citerefentry>,
+ <citerefentry>
+ <refentrytitle>systemd.netdev</refentrytitle><manvolnum>5</manvolnum>
+ </citerefentry>,
+ <citerefentry>
+ <refentrytitle>systemd.network</refentrytitle><manvolnum>5</manvolnum>
+ </citerefentry>
+ </para>
+ </refsect1>
+
+</refentry>