This is a note to let you know that I've just added the patch titled
netfilter: bridge: fix IPv6 packets not being bridged with CONFIG_IPV6=n
to the 4.2-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:
netfilter-bridge-fix-ipv6-packets-not-being-bridged-with-config_ipv6-n.patch
and it can be found in the queue-4.2 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 18e1db67e93ed75d9dc0d34c8d783ccf10547c2b Mon Sep 17 00:00:00 2001
From: Bernhard Thaler <[email protected]>
Date: Thu, 13 Aug 2015 08:58:15 +0200
Subject: netfilter: bridge: fix IPv6 packets not being bridged with
CONFIG_IPV6=n
From: Bernhard Thaler <[email protected]>
commit 18e1db67e93ed75d9dc0d34c8d783ccf10547c2b upstream.
230ac490f7fba introduced a dependency to CONFIG_IPV6 which breaks bridging
of IPv6 packets on a bridge with CONFIG_IPV6=n.
Sysctl entry /proc/sys/net/bridge/bridge-nf-call-ip6tables defaults to 1,
for this reason packets are handled by br_nf_pre_routing_ipv6(). When compiled
with CONFIG_IPV6=n this function returns NF_DROP but should return NF_ACCEPT
to let packets through.
Change CONFIG_IPV6=n br_nf_pre_routing_ipv6() return value to NF_ACCEPT.
Tested with a simple bridge with two interfaces and IPv6 packets trying
to pass from host on left side to host on right side of the bridge.
Fixes: 230ac490f7fba ("netfilter: bridge: split ipv6 code into separated file")
Signed-off-by: Bernhard Thaler <[email protected]>
Signed-off-by: Pablo Neira Ayuso <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
include/net/netfilter/br_netfilter.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/include/net/netfilter/br_netfilter.h
+++ b/include/net/netfilter/br_netfilter.h
@@ -59,7 +59,7 @@ static inline unsigned int
br_nf_pre_routing_ipv6(const struct nf_hook_ops *ops, struct sk_buff *skb,
const struct nf_hook_state *state)
{
- return NF_DROP;
+ return NF_ACCEPT;
}
#endif
Patches currently in stable-queue which might be from [email protected]
are
queue-4.2/netfilter-bridge-fix-ipv6-packets-not-being-bridged-with-config_ipv6-n.patch
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