From 2f401a6d4d0bebbb5e80711305d1f4904f192cee Mon Sep 17 00:00:00 2001 From: Hannes Frederic Sowa Date: Fri, 8 Mar 2013 02:07:23 +0000 Subject: [PATCH] ipv6: stop multicast forwarding to process interface scoped addresses [ Upstream commit ddf64354af4a702ee0b85d0a285ba74c7278a460 ] v2: a) used struct ipv6_addr_props v3: a) reverted changes for ipv6_addr_props v4: a) do not use __ipv6_addr_needs_scope_id Cc: YOSHIFUJI Hideaki Signed-off-by: Hannes Frederic Sowa Acked-by: YOSHIFUJI Hideaki Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- net/ipv6/ip6_input.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/net/ipv6/ip6_input.c b/net/ipv6/ip6_input.c index 027c7ff6f1e5..e2a08ae54ca9 100644 --- a/net/ipv6/ip6_input.c +++ b/net/ipv6/ip6_input.c @@ -257,7 +257,8 @@ int ip6_mc_input(struct sk_buff *skb) * IPv6 multicast router mode is now supported ;) */ if (dev_net(skb->dev)->ipv6.devconf_all->mc_forwarding && - !(ipv6_addr_type(&hdr->daddr) & IPV6_ADDR_LINKLOCAL) && + !(ipv6_addr_type(&hdr->daddr) & + (IPV6_ADDR_LOOPBACK|IPV6_ADDR_LINKLOCAL)) && likely(!(IP6CB(skb)->flags & IP6SKB_FORWARDED))) { /* * Okay, we try to forward - split and duplicate -- 2.39.5