From owner-freebsd-net@FreeBSD.ORG Sat Sep 27 15:17:33 2003 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id D29F116A4B3 for ; Sat, 27 Sep 2003 15:17:33 -0700 (PDT) Received: from postfix4-1.free.fr (postfix4-1.free.fr [213.228.0.62]) by mx1.FreeBSD.org (Postfix) with ESMTP id 020D54401F for ; Sat, 27 Sep 2003 15:17:33 -0700 (PDT) (envelope-from yannick.dambielle@free.fr) Received: from shibuya (nord-5-82-67-198-63.fbx.proxad.net [82.67.198.63]) by postfix4-1.free.fr (Postfix) with SMTP id 947844C5DB for ; Sun, 28 Sep 2003 00:17:31 +0200 (CEST) Message-ID: <001301c38545$27a15cf0$3fc64352@shibuya> From: "Dambielle Yannick" To: Date: Sun, 28 Sep 2003 00:17:35 +0200 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1158 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 Subject: tcpdump - tun/tap virtual interfaces X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 27 Sep 2003 22:17:33 -0000 Hello everybody, I've tried to dump some paquets sent to a virtual interface without any success for a couple of hours so I ask for some helps to the list. I use a FreeBSD 5.0, my kernel has been rebuilt and installed with the following option in order to use a tap virtual interface : device tap The virtual interface has been created (tap0) and I've attached the IP adress 10.0.0.1. It seems ok, I can see it with ifconfig. All the tests are local tests. While I ping 10.0.0.1 (paquets are sent and not lost), I laught a tcpdump -i tap0 from another shell... Nothing is dumped (?!)... Well, if some of you has an idea, I'll be very happy. Thank you in advance, Yannick