man: mention vlan devices inherit the MAC address of the physical interface

Follow-up for bc48c51f72d86c6f690724f251892da5657116ac.

Closes #4783.

[zj: tweak grammar a bit.]

diff --git a/man/systemd.netdev.xml b/man/systemd.netdev.xml
index e17c1e3fbefe0db6f238199813e7ca199c735346..c568a7e7f669ff89a4155453071b445930e91edf 100644 (file)
--- a/man/systemd.netdev.xml
+++ b/man/systemd.netdev.xml
@@ -287,15 +287,15 @@
         <varlistentry>
           <term><varname>MACAddress=</varname></term>
           <listitem>
-            <para>The MAC address to use for the device. If none is
-            given, one is generated based on the interface name and
-            the
-            <citerefentry><refentrytitle>machine-id</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
-            For <literal>tun</literal> or <literal>tap</literal> devices, <varname>MACAddress=</varname> setting
-            is not currently supported in <literal>[NetDev]</literal> section. Please specify it in
-            <literal>[Link]</literal> section of corresponding
+            <para>The MAC address to use for the device. For <literal>tun</literal> or <literal>tap</literal>
+            devices, setting <varname>MACAddress=</varname> in the <literal>[NetDev]</literal> section is not
+            supported. Please specify it in <literal>[Link]</literal> section of the corresponding
             <citerefentry><refentrytitle>systemd.network</refentrytitle><manvolnum>5</manvolnum></citerefentry>
-            files.</para>
+            file. If this option is not set, <literal>vlan</literal> devices inherit the MAC address of the
+            physical interface. For other kind of netdevs, if this option is not set, then MAC address is
+            generated based on the interface name and the
+            <citerefentry><refentrytitle>machine-id</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
+            </para>
           </listitem>
         </varlistentry>
       </variablelist>