This is a note to let you know that I've just added the patch titled
inet6: prevent network storms caused by linux IPv6 routers
to the 2.6.37-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
inet6-prevent-network-storms-caused-by-linux-ipv6-routers.patch
and it can be found in the queue-2.6.37 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From dc36df3b8b791ad6d668df5fe5533cb9776ac88a Mon Sep 17 00:00:00 2001
From: Alexey Kuznetsov <[email protected]>
Date: Wed, 12 Jan 2011 08:34:08 +0000
Subject: inet6: prevent network storms caused by linux IPv6 routers
From: Alexey Kuznetsov <[email protected]>
[ Upstream commit 72b43d0898e97f588293b4a24b33c58c46633d81 ]
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 <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
net/ipv6/ip6_output.c | 3 +++
1 file changed, 3 insertions(+)
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -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);
/*
Patches currently in stable-queue which might be from [email protected] are
queue-2.6.37/inet6-prevent-network-storms-caused-by-linux-ipv6-routers.patch
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