Update the documentation of ifname= cmdline

The documentation about ifname= needs to update.

Cc: Harald Hoyer <harald@redhat.com>
Cc: Dave Young <dyoung@redhat.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>

diff --git a/dracut.cmdline.7.asc b/dracut.cmdline.7.asc
index 5539c00b9357dbddd5e36cdaaf12f7a16b7e6844..dcdbbce18f77f9d3c1039a4c6a48c1bd9f48a3c3 100644 (file)
--- a/dracut.cmdline.7.asc
+++ b/dracut.cmdline.7.asc
@@ -288,8 +288,10 @@ auto6::: do IPv6 autoconfiguration
 **ifname=**_<interface>_:_<MAC>_::
     Assign network device name <interface> (ie eth0) to the NIC with MAC <MAC>.
     Note: If you use this option you _must_ specify an ifname= argument for all
-    interfaces used in ip= or fcoe= arguments. This parameter can be specified
-    multiple times.
+    interfaces used in ip= or fcoe= arguments. However, if the interface in
+    ip= or fcoe= is a bridge, bonding or vlan interface, you should specify
+    an ifname= for _each_ of its underlying interfaces. This parameter can be
+    specified multiple times.
 
 **bootdev=**_<interface>_::
     specify network interface to use routing and netroot information from.