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Commit 72b43d08 authored by Alexey Kuznetsov's avatar Alexey Kuznetsov Committed by David S. Miller
Browse files

inet6: prevent network storms caused by linux IPv6 routers 



Linux IPv6 forwards unicast packets, which are link layer multicasts...
The hole was present since day one. I was 100% this check is there, but it is not.

The problem shows itself, f.e. when Microsoft Network Load Balancer runs on a network.
This software resolves IPv6 unicast addresses to multicast MAC addresses.

Signed-off-by: default avatarAlexey Kuznetsov <kuznet@ms2.inr.ac.ru>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 12252771

net/ipv6/ip6_output.c

+3 −0
Original line number Diff line number Diff line
@@ -401,6 +401,9 @@ int ip6_forward(struct sk_buff *skb) 
		goto drop;

	}



	if (skb->pkt_type != PACKET_HOST)

		goto drop;



	skb_forward_csum(skb);



	/*