| Date | Mon, 25 Mar 2013 01:05:37 +0000 | From | Ben Hutchings <> | Subject | [ 013/104] ipv6: stop multicast forwarding to process interface scoped addresses |
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3.2-stable review patch. If anyone has any objections, please let me know.
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From: Hannes Frederic Sowa <hannes@stressinduktion.org>
[ 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 <yoshfuji@linux-ipv6.org> Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Ben Hutchings <ben@decadent.org.uk> --- net/ipv6/ip6_input.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
--- a/net/ipv6/ip6_input.c +++ b/net/ipv6/ip6_input.c @@ -265,7 +265,8 @@ 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
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