Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit dd408515 authored by Hannes Frederic Sowa's avatar Hannes Frederic Sowa Committed by David S. Miller
Browse files

ipv6: don't let node/interface scoped multicast traffic escape on the wire 



Reported-by: default avatarErik Hugne <erik.hugne@ericsson.com>
Cc: Erik Hugne <erik.hugne@ericsson.com>
Cc: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: default avatarHannes Frederic Sowa <hannes@stressinduktion.org>
Acked-by: default avatarYOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 65ab999d

net/ipv6/ip6_output.c

+7 −0
Original line number Diff line number Diff line
@@ -120,6 +120,13 @@ static int ip6_finish_output2(struct sk_buff *skb) 


		IP6_UPD_PO_STATS(dev_net(dev), idev, IPSTATS_MIB_OUTMCAST,

				skb->len);



		if (IPV6_ADDR_MC_SCOPE(&ipv6_hdr(skb)->daddr) <=

		    IPV6_ADDR_SCOPE_NODELOCAL &&

		    !(dev->flags & IFF_LOOPBACK)) {

			kfree_skb(skb);

			return 0;

		}

	}



	rcu_read_lock_bh();