man: systemd.link - explain random MAC addresses

Two of the bits in the MAC address are set unconditioanlly, and the rest is randomized,
make this clear in the documentation (as it currently read as if it was all random).

diff --git a/man/systemd.link.xml b/man/systemd.link.xml
index 5db06842bd4fc32af33629756385c4b018e035d4..723364f4d16e46f56e19e0305323665764c69ae0 100644 (file)
--- a/man/systemd.link.xml
+++ b/man/systemd.link.xml
@@ -232,7 +232,9 @@
                 <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.</para>
+                boot. Either way the random address will have the
+                <literal>unicast</literal> and
+                <literal>locally administered</literal> bits set.</para>
               </listitem>
             </varlistentry>
           </variablelist>