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From: roberto@eurocontrol.fr (Ollivier Robert)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: tcpdump of ppp?
Date: 3 Feb 1997 15:53:41 GMT
Organization: Eurocontrol EEC, Bretigny, France
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Message-ID: <5d51m5$qj9$1@polaris.eurocontrol.fr>
References: <5d4uuf$113@chronicle.concentric.net>
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[courtesy cc of this posting sent to cited author via email]
In article <5d4uuf$113@chronicle.concentric.net>,
Rick Slater <Slater@cris.com> wrote:
> The ppp documentation claims that one can use tcpdump with it,
> but when I point tcpdump at /dev/tun it comes up with the error
> message "/dev/bpf improperly configured" and then exits.
You must have the following:
- as many /dev/bpf* as you need simultaneously,
- "pseudo-device bpfilter N" in your kernel configuration file
- when you boot, it should shows "bpfN: attached" for all the netwokring
devices.
If you have this three things right, you should be able to use '-i tun0'
with tcpdump.
--
Ollivier ROBERT -=- Eurocontrol EEC/TS -=- Ollivier.Robert@eurocontrol.fr
FreeBSD FAQ: <URL:http://www.FreeBSD.org/FAQ/>