From owner-freebsd-stable@FreeBSD.ORG Fri Jul 10 12:32:08 2009 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 517FB106564A for ; Fri, 10 Jul 2009 12:32:08 +0000 (UTC) (envelope-from hlh@restart.be) Received: from tignes.restart.be (tignes.restart.be [IPv6:2001:41d0:2:2d29:0:1::]) by mx1.freebsd.org (Postfix) with ESMTP id D60E08FC1A; Fri, 10 Jul 2009 12:32:07 +0000 (UTC) (envelope-from hlh@restart.be) Received: from restart.be (avoriaz.tunnel.bel [IPv6:2001:41d0:2:2d29:1:ffff::]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "avoriaz.restart.be", Issuer "CA master" (verified OK)) by tignes.restart.be (Postfix) with ESMTPS id 2E6D94D3C; Fri, 10 Jul 2009 14:32:07 +0200 (CEST) Received: from morzine.restart.bel (morzine.restart.be [IPv6:2001:41d0:2:2d29:1:2::]) (authenticated bits=0) by restart.be (8.14.3/8.14.3) with ESMTP id n6ACW3pK055253; Fri, 10 Jul 2009 14:32:03 +0200 (CEST) (envelope-from hlh@restart.be) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=restart.be; s=avoriaz; t=1247229126; bh=ynWlcHTMgLkGhZcs/xWgOh4gJTwVT4EFsQqlWq+SLXM=; h=Message-ID:Date:From:MIME-Version:To:Subject:Content-Type: Content-Transfer-Encoding; b=VtDtprSArc+BGQcwRznBRhT5yH+xLrTxd6RtL/M9N4813UxW0HASKPEbpAqZcBZW7 I3ckuOy8LOrMeCIcBz/SA== DomainKey-Signature: a=rsa-sha1; s=avoriaz; d=restart.be; c=nofws; q=dns; h=message-id:date:from:organization:user-agent:mime-version:to: subject:content-type:content-transfer-encoding:x-scanned-by; b=CSRxbeTCecuXE7zCvkpPuYiENX9HFn1EbHTNkU5H4AzQAGHd6XA6KnhAEtka5PT67 EZtBvR+xQAhilf01f15Gg== Message-ID: <4A5734C3.3000806@restart.be> Date: Fri, 10 Jul 2009 14:32:03 +0200 From: Henri Hennebert Organization: RestartSoft User-Agent: Thunderbird 2.0.0.22 (X11/20090627) MIME-Version: 1.0 To: freebsd-stable@freebsd.org, freebsd-st@freebsd.org Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Scanned-By: MIMEDefang 2.64 on IPv6:2001:41d0:2:2d29:1:1:: Cc: Subject: 8.0-BETA1 - for the record - different paths followed by IPv4 and IPv6 for 'local' connections X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 10 Jul 2009 12:32:08 -0000 Hello, After upgrading from 7.2-STABLE to 8.0-BETA1 I encounter a problem when connecting with firefox to a local apache server using the global unicast IPv6 address of the local machine. pf.conf must be updated! My configuration: [root@avoriaz ~]# ifconfig em0 em0: flags=8843 metric 0 mtu 1500 options=19b ether 00:1d:60:ad:2a:ce inet 192.168.24.1 netmask 0xffffff00 broadcast 192.168.24.255 inet6 fe80::21d:60ff:fead:2ace%em0 prefixlen 64 scopeid 0x1 inet6 2001:41d0:2:2d29:1:1:: prefixlen 80 media: Ethernet 100baseTX (100baseTX ) status: active [root@avoriaz ~]# host www.restart.bel www.restart.bel is an alias for avoriaz.restart.bel. avoriaz.restart.bel has address 192.168.24.1 avoriaz.restart.bel has IPv6 address 2001:41d0:2:2d29:1:1:: pf.conf: int_if="em0" block in log all block out log all set skip on lo0 antispoof quick for $int_if inet # Allow trafic with physical internal network pass in quick on $int_if from ($int_if:network) to ($int_if) keep state pass out quick on $int_if from ($int_if) to ($int_if:network) keep state The problem: [root@avoriaz ~]# telnet -4 www.restart.bel 80 Trying 192.168.24.1... Connected to avoriaz.restart.bel. Escape character is '^]'. ^] telnet> quit Connection closed. [root@avoriaz ~]# telnet -6 www.restart.bel 80 Trying 2001:41d0:2:2d29:1:1::... --->Never connect and get a timeout! tcpdump and logging in pf show me that For a IPv4 connection: the packet from telnet to apache pass 2 times on lo0 (out and in) the answer packet from apache to telnet pass 2 times on lo0 (out and in) So no problem, there is `set skip on lo0' For a IPv6 connection: The first packet from telnet to apache pass 2 times on lo0 (out and in) The answer packet from apache to telnet path on em0 and is rejected due to the default flags S/SA. So I have to change pf.conf and replace the last line: pass out quick on $int_if from ($int_if) to ($int_if:network) \ keep state flags any Then all is OK By the way, on 7.2 netstat -rn display 192.168.24.1 00:1d:60:ad:2a:ce .... 2001:41d0:2:2d29:1:1:: 00:1d:60:ad:2a:ce On 8.0-BETA1 there is an assymetry: netstat -rn display 192.168.24.1 link#3 .... no entry for 2001:41d0:2:2d29:1:1:: Hope it may help someone Henri