From: Angga Date: Fri, 3 Jul 2015 02:40:52 +0000 (+1200) Subject: ipv6: Make MLD packets to only be processed locally X-Git-Tag: v3.16.35~1598 X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=1d2bb302c6a13666b4e86b3ee492db9efc84feed;p=thirdparty%2Fkernel%2Fstable.git ipv6: Make MLD packets to only be processed locally commit 4c938d22c88a9ddccc8c55a85e0430e9c62b1ac5 upstream. Before commit daad151263cf ("ipv6: Make ipv6_is_mld() inline and use it from ip6_mc_input().") MLD packets were only processed locally. After the change, a copy of MLD packet goes through ip6_mr_input, causing MRT6MSG_NOCACHE message to be generated to user space. Make MLD packet only processed locally. Fixes: daad151263cf ("ipv6: Make ipv6_is_mld() inline and use it from ip6_mc_input().") Signed-off-by: Hermin Anggawijaya Signed-off-by: David S. Miller Signed-off-by: Luis Henriques --- diff --git a/net/ipv6/ip6_input.c b/net/ipv6/ip6_input.c index 51d54dc376f3b..05c94d9c37763 100644 --- a/net/ipv6/ip6_input.c +++ b/net/ipv6/ip6_input.c @@ -329,10 +329,10 @@ int ip6_mc_input(struct sk_buff *skb) if (offset < 0) goto out; - if (!ipv6_is_mld(skb, nexthdr, offset)) - goto out; + if (ipv6_is_mld(skb, nexthdr, offset)) + deliver = true; - deliver = true; + goto out; } /* unknown RA - process it normally */ }