Commit 72b43d08 authored Jan 12, 2011 by Alexey Kuznetsov Committed by David S. Miller Jan 12, 2011

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: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
Signed-off-by: David 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);

		/*

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