Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab...

[pandora-kernel.git] / Documentation / networking / bonding.txt

diff --git a/Documentation/networking/bonding.txt b/Documentation/networking/bonding.txt
index 1f45bd8..675612f 100644 (file)
--- a/Documentation/networking/bonding.txt
+++ b/Documentation/networking/bonding.txt
@@ -770,8 +770,17 @@ resend_igmp
        a failover event. One membership report is issued immediately after
        the failover, subsequent packets are sent in each 200ms interval.
 
-       The valid range is 0 - 255; the default value is 1. This option
-       was added for bonding version 3.7.0.
+       The valid range is 0 - 255; the default value is 1. A value of 0
+       prevents the IGMP membership report from being issued in response
+       to the failover event.
+
+       This option is useful for bonding modes balance-rr (0), active-backup
+       (1), balance-tlb (5) and balance-alb (6), in which a failover can
+       switch the IGMP traffic from one slave to another.  Therefore a fresh
+       IGMP report must be issued to cause the switch to forward the incoming
+       IGMP traffic over the newly selected slave.
+
+       This option was added for bonding version 3.7.0.
 
 3. Configuring Bonding Devices
 ==============================