From owner-freebsd-current@FreeBSD.ORG Mon Jul 20 17:36:07 2009 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 867BF106566B for ; Mon, 20 Jul 2009 17:36:07 +0000 (UTC) (envelope-from pieter@degoeje.nl) Received: from mx.utwente.nl (mx2.utsp.utwente.nl [130.89.2.13]) by mx1.freebsd.org (Postfix) with ESMTP id 08A948FC16 for ; Mon, 20 Jul 2009 17:36:06 +0000 (UTC) (envelope-from pieter@degoeje.nl) Received: from nox.student.utwente.nl (nox.student.utwente.nl [130.89.165.91]) by mx.utwente.nl (8.12.10/SuSE Linux 0.7) with ESMTP id n6KHZER7032652; Mon, 20 Jul 2009 19:35:14 +0200 From: Pieter de Goeje To: Bruce Simpson Date: Mon, 20 Jul 2009 19:35:14 +0200 User-Agent: KMail/1.11.4 (FreeBSD/8.0-BETA2; KDE/4.2.4; amd64; ; ) References: <200907182056.47383.pieter@degoeje.nl> <4A628056.60009@incunabulum.net> In-Reply-To: <4A628056.60009@incunabulum.net> MIME-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200907201935.14389.pieter@degoeje.nl> X-UTwente-MailScanner-Information: Scanned by MailScanner. Contact icts.servicedesk@utwente.nl for more information. X-UTwente-MailScanner: Found to be clean X-UTwente-MailScanner-From: pieter@degoeje.nl X-Spam-Status: No Cc: freebsd-current@freebsd.org Subject: Re: Sending multicast datagrams broken (regression) X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 20 Jul 2009 17:36:07 -0000 On Sunday 19 July 2009 04:09:26 Bruce Simpson wrote: > Pieter de Goeje wrote: > > I'm observing that multicast IPv4 UDP datagrams sent from the latest > > 8.0-BETA2 are being discarded. The code below used to work with 7.2. > > Can you tcpdump this? > > This may be related to an llentry related regression which Xin Li > recently posted a patch for, it appears that layer 2 addresses for > multicast/broadcast datagrams may be broken in 8.0-BETA2. > > Although I haven't tested this myself since committing the SSM code > around April, where I observed such traffic was correct. Dump from an 8.0 sender: http://unforgiven.student.utwente.nl/~pyotr/dump/mcast Indeed it looks like the destination mac address is different from the dump generated by 7.2. 8.0: 00:00:0c:07:ac:00 7.2: 01:00:5e:7f:09:09 Kind regards, Pieter de Goeje