From owner-freebsd-current@FreeBSD.ORG Tue Mar 29 14:53:10 2011 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id B5A2D1065674 for ; Tue, 29 Mar 2011 14:53:10 +0000 (UTC) (envelope-from ticso@cicely7.cicely.de) Received: from raven.bwct.de (raven.bwct.de [85.159.14.73]) by mx1.freebsd.org (Postfix) with ESMTP id 2520E8FC14 for ; Tue, 29 Mar 2011 14:53:09 +0000 (UTC) Received: from mail.cicely.de ([10.1.1.37]) by raven.bwct.de (8.13.4/8.13.4) with ESMTP id p2TEr7O7054879 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Tue, 29 Mar 2011 16:53:07 +0200 (CEST) (envelope-from ticso@cicely7.cicely.de) Received: from cicely7.cicely.de (cicely7.cicely.de [10.1.1.9]) by mail.cicely.de (8.14.4/8.14.4) with ESMTP id p2TEqunK019545 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Tue, 29 Mar 2011 16:52:56 +0200 (CEST) (envelope-from ticso@cicely7.cicely.de) Received: from cicely7.cicely.de (localhost [127.0.0.1]) by cicely7.cicely.de (8.14.2/8.14.2) with ESMTP id p2TEqu3d035040; Tue, 29 Mar 2011 16:52:56 +0200 (CEST) (envelope-from ticso@cicely7.cicely.de) Received: (from ticso@localhost) by cicely7.cicely.de (8.14.2/8.14.2/Submit) id p2TEqr7H035039; Tue, 29 Mar 2011 16:52:53 +0200 (CEST) (envelope-from ticso) Date: Tue, 29 Mar 2011 16:52:53 +0200 From: Bernd Walter To: "Daniel O'Connor" Message-ID: <20110329145253.GA34921@cicely7.cicely.de> References: <451C39DA-76B9-4767-9FFC-24F2A182E301@dons.net.au> <0C27BDBF-1F22-4DFD-A1A5-48D0BD1618BC@gsoft.com.au> <71147117-D87B-4F36-9838-238E144BB51F@gsoft.com.au> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Operating-System: FreeBSD cicely7.cicely.de 7.0-STABLE i386 User-Agent: Mutt/1.5.11 X-Spam-Status: No, score=-2.9 required=5.0 tests=ALL_TRUSTED=-1, BAYES_00=-1.9, T_RP_MATCHES_RCVD=-0.01 autolearn=unavailable version=3.3.0 X-Spam-Checker-Version: SpamAssassin 3.3.0 (2010-01-18) on spamd.cicely.de Cc: freebsd-current@freebsd.org, Marcin Cieslak Subject: Re: ipv6 / rtadv problem X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: ticso@cicely.de List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 29 Mar 2011 14:53:10 -0000 On Tue, Mar 29, 2011 at 11:43:57PM +1030, Daniel O'Connor wrote: > > It is running a fairly old FreeBSD (6.x..), maybe there are bugs there.. I don't think there are general bugs about neighbor discovery in FreeBSD since the beginning, but NIC drivers might have multicast bugs and although you are running this host since a long time such bugs might be unnoticed. You can show and clear the neighbor cache data by using ndp command, which has similar handling as arp. If you use tcpdump to debug NDP packets be aware that by enabling promiscuous mode you get every multicast packet despite of correct filter setup, so you won't see a problem if the driver isn't configuring the filter correctly. On the other hand you can workaround a such driver bug by enabling promiscuous mode. -- B.Walter http://www.bwct.de Modbus/TCP Ethernet I/O Baugruppen, ARM basierte FreeBSD Rechner uvm.