From owner-freebsd-questions@FreeBSD.ORG  Wed Jan  5 20:42:10 2005
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
Delivered-To: freebsd-questions@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id ACF1A16A4CE
	for <freebsd-questions@freebsd.org>;
	Wed,  5 Jan 2005 20:42:10 +0000 (GMT)
Received: from pernis.its.uu.se (pernis.its.UU.SE [130.238.4.153])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 7AEE043D1F
	for <freebsd-questions@freebsd.org>;
	Wed,  5 Jan 2005 20:42:09 +0000 (GMT)
	(envelope-from ante@Update.UU.SE)
Received: by pernis.its.uu.se (Postfix, from userid 205)
	id 2D14D12B; Wed,  5 Jan 2005 21:42:07 +0100 (MEZ)
Received: from pernis.its.uu.se(127.0.0.1) by pernis.its.uu.se via virus-scan 
	id s303; Wed, 5 Jan 05 21:41:57 +0100
Received: from Psilocybe.Update.UU.SE (Psilocybe.Update.UU.SE [130.238.19.25])
	by pernis.its.uu.se (Postfix) with ESMTP id E61B811E;
	Wed,  5 Jan 2005 21:41:56 +0100 (MEZ)
Received: by Psilocybe.Update.UU.SE (Postfix, from userid 30086)
	id DD52E38015; Wed,  5 Jan 2005 21:41:56 +0100 (CET)
Received: from localhost (localhost [127.0.0.1])
	by Psilocybe.Update.UU.SE (Postfix) with ESMTP id DC0DF5C002;
	Wed,  5 Jan 2005 21:41:56 +0100 (CET)
Date: Wed, 5 Jan 2005 21:41:56 +0100 (CET)
From: Andreas Davour <ante@Update.UU.SE>
To: Olivier Certner <olivier.certner@free.fr>
In-Reply-To: <200501052123.42651.olivier.certner@free.fr>
Message-ID: <Pine.LNX.4.61.0501052140310.6553@Psilocybe.Update.UU.SE>
References: <Pine.LNX.4.61.0501052107010.6553@Psilocybe.Update.UU.SE>
 <200501052123.42651.olivier.certner@free.fr>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed
cc: freebsd-questions@freebsd.org
Subject: Re: Is bpf a part of IPFW, or am I confused?
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: User questions <freebsd-questions.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>,
	<mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions>
List-Post: <mailto:freebsd-questions@freebsd.org>
List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>,
	<mailto:freebsd-questions-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 05 Jan 2005 20:42:10 -0000

On Wed, 5 Jan 2005, Olivier Certner wrote:

> I'm not able to give a deep answer on that. What I can say is that you must
> compile the kernel with bpf if you want to use the DHCP protocol or the
> tcpdump utility.

tcpdump as well? Worth remembering.

> It would be great if someone can clarify the precise roles of bpf.

Indeed. That it is the userland framework helps, but I guess something 
is lacking in the documentation, or my skill at reading it.

/andreas

-- 
A: Because it fouls the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing on usenet and in e-mail?