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Date: Tue, 14 Aug 2007 10:18:46 +0000 (UTC)
From: "Bjoern A. Zeeb" <bzeeb-lists@lists.zabbadoz.net>
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To: Eric Masson <emss@free.fr>
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Cc: Mailing List FreeBSD Network <freebsd-net@FreeBSD.org>
Subject: Re: pf rdr statement & ipsec processing interaction
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On Tue, 14 Aug 2007, Eric Masson wrote:

> "Bjoern A. Zeeb" <bzeeb-lists@lists.zabbadoz.net> writes:
>
> Hello Bjoern & all,
>
>> this is expected behavior. You want to read about the
>> IPSEC_FILTERTUNNEL (fka. IPSEC_FILTERGIF) kernel option and
>> enc(4).
>
> I've compiled a new kernel with IPSEC_FILTERGIF, tcpdump now can see
> unencrypted L2TP packets on external interfaces but rdr rule doesn't
> have any effect.
>
> Just to be sure, I added "device enc" to the kernel configuration and
> changed the rdr rule to :
> rdr on enc0 proto udp from any to ($ext_if) port 1701 -> 10.127.0.1 port 1701
>
> But no success atm. Any idea ?

ifconfig enc0 | grep UP

if not, ifconfig enc0 up

-- 
Bjoern A. Zeeb                                 bzeeb at Zabbadoz dot NeT
Software is harder than hardware  so better get it right the first time.