From owner-freebsd-questions@FreeBSD.ORG Sun Sep 27 19:14:03 2009 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id D83C7106568D for ; Sun, 27 Sep 2009 19:14:03 +0000 (UTC) (envelope-from sserre.bx@gmail.com) Received: from mail-ew0-f209.google.com (mail-ew0-f209.google.com [209.85.219.209]) by mx1.freebsd.org (Postfix) with ESMTP id 64D4B8FC13 for ; Sun, 27 Sep 2009 19:14:03 +0000 (UTC) Received: by ewy5 with SMTP id 5so2346152ewy.36 for ; Sun, 27 Sep 2009 12:14:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:from:to:subject:date :user-agent:references:in-reply-to:mime-version:content-type :content-transfer-encoding:message-id; bh=hnoPlSFNQulLBNMP0y991UgehHkZzmUVYETrXuQXVfw=; b=R2J6orWUMuHBjyJxCy4eyb+9TbnWoMlMqjje0WA5FfUZD3I7yb3YoqZ79VO//ka2Nx R974tVJDNfdkYDj2WljkFjcjxUuimTxy5lRxG8GbK2jkYo43dQZmreITQ0pUDeplBcyB kGwi5YGeEbkHTLJkaroMH90Iqvjip5pKDjmps= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=from:to:subject:date:user-agent:references:in-reply-to:mime-version :content-type:content-transfer-encoding:message-id; b=vUEsa3apFrXc/iCBtaFDcW41I2+6qzvzxGVjzunjqbgPZODqBHYcqdRqkC+inhJ1gd rgp5oXNq7yUntENY7vw5LbLI/4p+7Czf2iGq1OrGpZQUxAF4fQbH0iULoy2SrjFFoVwK NMsH6vxeKcBtfMBEYiJToN668A0aFPRqjCx08= Received: by 10.211.131.11 with SMTP id i11mr2214090ebn.68.1254078842384; Sun, 27 Sep 2009 12:14:02 -0700 (PDT) Received: from mentha.officinalis.lan (85-170-126-61.rev.numericable.fr [85.170.126.61]) by mx.google.com with ESMTPS id 7sm220276eyb.12.2009.09.27.12.14.01 (version=TLSv1/SSLv3 cipher=RC4-MD5); Sun, 27 Sep 2009 12:14:01 -0700 (PDT) From: =?iso-8859-1?q?S=E9bastien_Serre?= To: freebsd-questions@freebsd.org Date: Sun, 27 Sep 2009 21:13:38 +0200 User-Agent: KMail/1.12.1 (FreeBSD/7.2-RELEASE-p2; KDE/4.3.1; i386; ; ) References: <200909271817.22176.sserre.bx@gmail.com> In-Reply-To: <200909271817.22176.sserre.bx@gmail.com> MIME-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message-Id: <200909272113.38035.sserre.bx@gmail.com> Subject: Re: tap interface problem X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 27 Sep 2009 19:14:04 -0000 On Sunday 27 September 2009 18:17:22 S=E9bastien Serre wrote: > Hello, I hope somebody here known well tap interfaces on freebsd :). >=20 > I try to configure virtualbox with bridge interface. Everything seams ok: > # ifconfig tap0 >=20 > tap0: flags=3D8943 metric= 0 > mtu 1500 > ether 00:bd:4f:0a:00:00 > inet 192.168.0.1 netmask 0xffffff00 broadcast 192.168.0.255 >=20 > # ls -l /dev/tap0 > crw-rw-rw- 1 root wheel 0, 109 Sep 27 16:54 /dev/tap0 >=20 > The problem is that nothing pass in the tap0 interface. tcpdump does not > show any traffic when I try to connect a machine on the 192.168 network.= I > can ping the interface address (192.168.0.1). But without with the use of > the tap itself (use of lo0): >=20 > # route -n get 192.168.0.1 > route to: 192.168.0.1 > destination: 192.168.0.1 > interface: lo0 > flags: > recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu > expire > 0 0 0 0 0 0 16384 = =20 > 0 >=20 >=20 > Then i have a tap interface up, but i can't pass to it any traffic. > Does anybody have a suggestion, or know some debugging tools to show what > append? >=20 > Thanks >=20 > Sebovick > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to > "freebsd-questions-unsubscribe@freebsd.org" >=20 Me again, I can now listen something on tap0: # tcpdump -i tap0 tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on tap0, link-type EN10MB (Ethernet), capture size 96 bytes 21:08:22.668835 arp who-has 192.168.0.1 tell 192.168.0.101 21:08:23.668526 arp who-has 192.168.0.1 tell 192.168.0.101 21:08:24.668272 arp who-has 192.168.0.1 tell 192.168.0.101 21:08:25.671499 arp who-has 192.168.0.1 tell 192.168.0.101 192.168.0.101 is my virtual machine trying to ping the host address of the = tap=20 interface. The host did not reply. When I try to ping the guest from the host, tcpdump stay silent. So the tap interface is ok for the guest, but the host don't know how to ta= lk=20 against tap. Any idea?