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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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             reply	other threads:[~2012-01-03  1:29 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-01-03  1:29 Richard Weinberger [this message]
2012-01-03 13:26 ` [Bridge] xt_physdev has no effect if net.bridge.bridge-nf-call-iptables=0 Richard Weinberger
2012-01-03 13:26   ` Richard Weinberger
2012-01-03 13:26   ` [Bridge] [PATCH] netfilter: Fix br_nf_pre_routing() in conjunction with bridge-nf-call-ip(6)tables=0 Richard Weinberger
2012-01-03 13:26     ` Richard Weinberger
2012-01-03 16:15     ` [Bridge] " Stephen Hemminger
2012-01-03 16:15       ` Stephen Hemminger
2012-01-03 17:42       ` [Bridge] " Richard Weinberger
2012-01-03 17:42         ` Richard Weinberger
2012-01-03 20:15         ` [Bridge] " Bart De Schuymer
2012-01-03 20:15           ` Bart De Schuymer
2012-01-03 20:29           ` [Bridge] " Richard Weinberger
2012-01-03 20:29             ` Richard Weinberger
2012-01-04 17:55             ` [Bridge] " Bart De Schuymer
2012-01-04 17:55               ` Bart De Schuymer
2012-01-04 23:13               ` [Bridge] " Richard Weinberger
2012-01-04 23:13                 ` Richard Weinberger
2012-01-05 19:50                 ` [Bridge] " Bart De Schuymer
2012-01-05 19:50                   ` Bart De Schuymer
2012-01-05 19:50                   ` Bart De Schuymer
2012-01-05 19:54                   ` [Bridge] " Richard Weinberger
2012-01-05 19:54                     ` Richard Weinberger

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