From: Richard Weinberger <richard@nod.at>
To: netfilter-devel@vger.kernel.org, linux-netdev@vger.kernel.org
Subject: xt_physdev has no effect if net.bridge.bridge-nf-call-iptables=0
Date: Tue, 03 Jan 2012 02:29:43 +0100 [thread overview]
Message-ID: <4F025A07.2000304@nod.at> (raw)
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Hi!
If net.bridge.bridge-nf-call-iptables is set to zero (which is the
default setting in Fedroa and RHEL6) xt_physdev has no effect.
A rule like this one will never match:
iptables -t nat -A PREROUTING -i bridge0 -m physdev --physdev-in eth0 -p
tcp --dport 80 -j DNAT --to-destination :8080
IMHO the cause of the problem is in net/bridge/br_netfilter.c,
br_nf_pre_routing() returns NF_ACCEPT before skb->nf_bridge is allocated
and skb->nf_bridge->physindev set to skb->dev.
Thanks,
//richard
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next reply other threads:[~2012-01-03 1:29 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-03 1:29 Richard Weinberger [this message]
2012-01-03 13:26 ` xt_physdev has no effect if net.bridge.bridge-nf-call-iptables=0 Richard Weinberger
2012-01-03 13:26 ` [PATCH] netfilter: Fix br_nf_pre_routing() in conjunction with bridge-nf-call-ip(6)tables=0 Richard Weinberger
2012-01-03 16:15 ` Stephen Hemminger
2012-01-03 17:42 ` Richard Weinberger
2012-01-03 20:15 ` Bart De Schuymer
2012-01-03 20:29 ` Richard Weinberger
2012-01-04 17:55 ` Bart De Schuymer
2012-01-04 23:13 ` Richard Weinberger
2012-01-05 19:50 ` Bart De Schuymer
2012-01-05 19:54 ` Richard Weinberger
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