mdev_fat.conf: add a rule to run nameif

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

examples/mdev_fat.conf

@@ -7,7 +7,7 @@
 # instead of the default 0:0 660.
 #
 # Syntax:
-# devicename_regex user:group mode [>|=path] [@|$|*cmd args...]
+# [-]devicename_regex user:group mode [>|=path] [@|$|*cmd args...]
 #
 # =: move, >: move and create a symlink
 # @|$|*: run $cmd on delete, @cmd on create, *cmd on both
@@ -49,6 +49,7 @@ sr[0-9]*	root:cdrom 660 @ln -sf $MDEV cdrom
 fd[0-9]*	root:floppy 660
 
 # net devices
+-net/.*		root:root 600 @nameif
 tun[0-9]*	root:root 600 =net/
 tap[0-9]*	root:root 600 =net/