From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pablo Neira Ayuso Subject: [PATCH 2/6] netfilter: bridge: fix IPv6 packets not being bridged with CONFIG_IPV6=n Date: Thu, 3 Sep 2015 11:50:57 +0200 Message-ID: <1441273861-31092-3-git-send-email-pablo@netfilter.org> References: <1441273861-31092-1-git-send-email-pablo@netfilter.org> Cc: davem@davemloft.net, netdev@vger.kernel.org To: netfilter-devel@vger.kernel.org Return-path: In-Reply-To: <1441273861-31092-1-git-send-email-pablo@netfilter.org> Sender: netdev-owner@vger.kernel.org List-Id: netfilter-devel.vger.kernel.org From: Bernhard Thaler 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 Signed-off-by: Pablo Neira Ayuso --- include/net/netfilter/br_netfilter.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/net/netfilter/br_netfilter.h b/include/net/netfilter/br_netfilter.h index bab824b..d4c6b5f 100644 --- 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 -- 1.7.10.4