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Date:      Tue, 17 Feb 1998 17:07:52 +0200
From:      Nadav Eiron <nadav@barcode.co.il>
To:        Christoph Kukulies <kuku@gilberto.physik.RWTH-Aachen.DE>
Cc:        freebsd-questions@freefall.FreeBSD.org, isdn@FreeBSD.ORG
Subject:   Re: tcpdump - bpf Q
Message-ID:  <34E9A7C8.5974@barcode.co.il>
References:  <199802171457.OAA16093@gilberto.physik.RWTH-Aachen.DE>

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Christoph Kukulies wrote:
> 
> I'm running 2.2.5-R with bisdn-0.97 plus IPDIVERT/IPFIREWALL kernel
> with natd.
> 
> When running tcpdump -i ipi0 on the isdn interface I'm getting
> 
> tcpdump: /dev/bpf0: Device not configured
> 
> Is this normal behaviour - maybe since natd is running or IPDIVERT /FW
> is active in the kernel?

Do you have bpfilter compiled into the kernel? I don't use ISDN on
FreeBSD, but it's the same error as if you don't have bpf compiled in.
Look at LINT for an example.

> 
> I remember I was able doing tcpdump on the ipi0 interface before.
> 
> --
> Chris Christoph P. U. Kukulies kuku@gil.physik.rwth-aachen.de
> 
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Nadav

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