From owner-freebsd-current@FreeBSD.ORG Sat Nov 5 22:39:23 2005 Return-Path: X-Original-To: current@freebsd.org Delivered-To: freebsd-current@FreeBSD.ORG Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id C8B7D16A41F; Sat, 5 Nov 2005 22:39:23 +0000 (GMT) (envelope-from sean@mcneil.com) Received: from mail.mcneil.com (mcneil.com [24.199.45.54]) by mx1.FreeBSD.org (Postfix) with ESMTP id 7B9FA43D45; Sat, 5 Nov 2005 22:39:23 +0000 (GMT) (envelope-from sean@mcneil.com) Received: from localhost (localhost.mcneil.com [127.0.0.1]) by mail.mcneil.com (Postfix) with ESMTP id 022EDF24A6; Sat, 5 Nov 2005 14:39:23 -0800 (PST) Received: from mail.mcneil.com ([127.0.0.1]) by localhost (server.mcneil.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 00799-04; Sat, 5 Nov 2005 14:39:14 -0800 (PST) Received: from [10.1.0.10] (mobile.mcneil.com [10.1.0.10]) by mail.mcneil.com (Postfix) with ESMTP id A162EF2442; Sat, 5 Nov 2005 14:39:14 -0800 (PST) In-Reply-To: References: <1131161768.8571.9.camel@server.mcneil.com> Mime-Version: 1.0 (Apple Message framework v746.2) Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed Message-Id: <8427EC93-6788-4659-B769-3703FF2AAA9A@mcneil.com> Content-Transfer-Encoding: 7bit From: Sean McNeil Date: Sat, 5 Nov 2005 14:39:13 -0800 To: Hajimu UMEMOTO X-Mailer: Apple Mail (2.746.2) X-Virus-Scanned: by amavisd-new at mcneil.com X-Mailman-Approved-At: Sun, 06 Nov 2005 15:19:37 +0000 Cc: current@freebsd.org Subject: Re: recent MFC code to 6-STABLE kills ipv6 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: Sat, 05 Nov 2005 22:39:23 -0000 On Nov 5, 2005, at 11:58 AM, Hajimu UMEMOTO wrote: > Hi, > >>>>>> On Fri, 04 Nov 2005 19:36:08 -0800 >>>>>> Sean McNeil said: > > sean> My IMAP server used to work perfectly fine with IPv6 > connections from > sean> evolution. Today, there was some MFCd code that has killed > it. I can > sean> no longer log into my imap server with IPv6. Investigating, > I find that > sean> the interface I have tied to stf0 will not respond. > > When was your working kernel built? I had a working kernel that was built perhaps 3-4 days ago. It is the changes MFCd in the last couple of days that broke things. > sean> ping6 does NOT work for > sean> fe80::203:6dff:fe1a:b19b%dc0 > sean> 2002:18c7:2d36:0:203:6dff:fe1a:b19b > sean> 2002:18c7:2d36:: > > It seems an IPv6 operation for dc0 is disabled entirely. Don't you > see an error message from your kernel like following? > > dc0: possible hardware address duplication detected, disable IPv6 No, nothing like that in any logs. I can't see how there could suddenly be a duplication of hardware addresses. I agree, though, that IPv6 is disabled for dc0. Some change in the kernel has caused this. Two things to note: The dc0 interface has option VLAN_MTU. Don't know why. The dc0 interface is my gateway with ipv4mapping. Here are the relevant rc.conf settings... /etc/rc.conf:ipv6_defaultrouter="2002:c058:6301::" /etc/rc.conf:ipv6_enable="YES" /etc/rc.conf:ipv6_gateway_enable="YES" /etc/rc.conf:ipv6_prefix_dc0="2002:18c7:2d36:0000" /etc/rc.conf:ipv6_prefix_sk0="2002:18c7:2d36:0001" /etc/rc.conf:ipv6_router_enable="YES" /etc/rc.conf:stf_interface_ipv4addr="24.199.45.54" /etc/rc.conf.d/ip6addrctl:ipv6_enable="YES" /etc/rc.conf.d/ip6fw:ipv6_firewall_enable="YES" /etc/rc.conf.d/ip6fw:ipv6_firewall_type="/etc/fw/rc.firewall6.rules" /etc/rc.conf.d/ip6fw:ipv6_firewall_quiet="YES" /etc/rc.conf.d/network_ipv6:ipv6_ipv4mapping="YES" /etc/rc.conf.d/route6d:ipv6_router_enable="YES" looking at ip6fw show indicated nothing is being denied. Cheers, Sean