Re: [PATCH 1/1] ipv6 : ip6mr.c : Fix can't match the IPv6 multicast packets with input net device in netfilter FORWARD chain.

From: Jun Zhao <redacted>
Date: Thu,  2 Aug 2012 21:00:55 +0800

Current kernel change the skb's net device with output device before netfilter FORWARD chain,
that will lead to can't match the IPv6 multicast packets with input net device in netfilter
FORWARD chain.

the test case for reproduce this issue as follow:

IPv6 multicast udp stream from eth0(input device) to eth1(output device)

Your change means we now can't match on the VIF device in this situation.

I'm not applying this patch, it breaks as much as it fixes.