udev: net_setup - clarify reason for failure of persistent mac address policy

[elogind.git] / man / systemd.link.xml

diff --git a/man/systemd.link.xml b/man/systemd.link.xml
index 2cfe7107f883b5adeeda88b738163ea59d876b2c..d5c8b9968d571d6e3e744a998313db82f041cbbf 100644 (file)
--- a/man/systemd.link.xml
+++ b/man/systemd.link.xml
@@ -216,7 +216,10 @@
                 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.</para>
+                which is otherwise random. This feature depends on ID_NET_NAME_*
+                properties existing for the link, on hardware where these
+                properties are not set the generation of a persistent mac address
+                will fail.</para>
               </listitem>
             </varlistentry>
             <varlistentry>