From owner-freebsd-current@FreeBSD.ORG Tue Mar 29 14:58:04 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 56B98106566B for ; Tue, 29 Mar 2011 14:58:04 +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 B5F668FC08 for ; Tue, 29 Mar 2011 14:58:03 +0000 (UTC) Received: from mail.cicely.de ([10.1.1.37]) by raven.bwct.de (8.13.4/8.13.4) with ESMTP id p2TEw2wO054953 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Tue, 29 Mar 2011 16:58:02 +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 p2TEw01d019798 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Tue, 29 Mar 2011 16:58:00 +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 p2TEvxjT035083; Tue, 29 Mar 2011 16:57:59 +0200 (CEST) (envelope-from ticso@cicely7.cicely.de) Received: (from ticso@localhost) by cicely7.cicely.de (8.14.2/8.14.2/Submit) id p2TEvxoa035082; Tue, 29 Mar 2011 16:57:59 +0200 (CEST) (envelope-from ticso) Date: Tue, 29 Mar 2011 16:57:59 +0200 From: Bernd Walter To: "Daniel O'Connor" Message-ID: <20110329145759.GB34921@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> <20110329113414.GA33138@cicely7.cicely.de> <6C3B14AB-AB41-4705-84C2-EEFC38656EE9@gsoft.com.au> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <6C3B14AB-AB41-4705-84C2-EEFC38656EE9@gsoft.com.au> 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=ham version=3.3.0 X-Spam-Checker-Version: SpamAssassin 3.3.0 (2010-01-18) on spamd.cicely.de Cc: Sergey Kandaurov , ticso@cicely.de, freebsd-current Current 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 14:58:04 -0000 On Tue, Mar 29, 2011 at 10:19:26PM +1030, Daniel O'Connor wrote: > > On 29/03/2011, at 22:04, Bernd Walter wrote: > > My assumption is that the problem is with the other host or switch > > network and you just never noticed this so far because this kind of > > problem can easily hide for a very long time. > > Hmm, I have pretty stupid hardware, I am fairly sure none of my switches understand multicast. There are two class of multicast capable switches. On of them are professional switches of course, but given that IPTV runs with multicast some cheap manageable switches and quite often integrated switches in plastic routers support it as well. IPv4 multicast and IPv6 multicast is very similar, but they use non colliding MAC ranges, so pure IPv4 multicast switches are not a problem for IPv6 multicast, but I'm a bit worried that some cheap devices have alpha quality IPv6 multicast support enabled. -- B.Walter http://www.bwct.de Modbus/TCP Ethernet I/O Baugruppen, ARM basierte FreeBSD Rechner uvm.