From owner-freebsd-stable@FreeBSD.ORG Fri Jul 10 22:03:24 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 D077E1065801 for ; Fri, 10 Jul 2009 22:03:24 +0000 (UTC) (envelope-from qing.li@bluecoat.com) Received: from whisker.bluecoat.com (whisker.bluecoat.com [216.52.23.28]) by mx1.freebsd.org (Postfix) with ESMTP id 4D17E8FC1F; Fri, 10 Jul 2009 22:03:24 +0000 (UTC) (envelope-from qing.li@bluecoat.com) Received: from bcs-mail03.internal.cacheflow.com ([10.2.2.95]) by whisker.bluecoat.com (8.14.2/8.14.2) with ESMTP id n6ALphwX004611; Fri, 10 Jul 2009 14:51:44 -0700 (PDT) X-MimeOLE: Produced By Microsoft Exchange V6.5 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Date: Fri, 10 Jul 2009 14:51:39 -0700 Message-ID: X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: 8.0-BETA1 - for the record - different paths followed by IPv4 and IPv6 for 'local' connections Thread-Index: AcoBWrJ+I+9bnFsRRUabMfoqrB4rsgATKDg1 References: <4A5734C3.3000806@restart.be> From: "Li, Qing" To: "Henri Hennebert" , , Cc: Subject: RE: 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 22:03:25 -0000 Hi, Please try patch-7-10 in my home directory = http://people.freebsd.org/~qingli/ and let me know how it works out for you. I thought I had committed the = patch=20 but turned out I didn't. > > On 8.0-BETA1 there is an assymetry: > > netstat -rn display >=20 > 192.168.24.1 link#3 > .... > no entry for 2001:41d0:2:2d29:1:1:: >=20 This is by design as part of the new architecture in 8.0, which = maintains=20 the L2 ARP/ND6 and L3 routing tables separately. -- Qing -----Original Message----- From: owner-freebsd-stable@freebsd.org on behalf of Henri Hennebert Sent: Fri 7/10/2009 5:32 AM To: freebsd-stable@freebsd.org; freebsd-st@freebsd.org Subject: 8.0-BETA1 - for the record - different paths followed by IPv4 = and IPv6 for 'local' connections =20 Hello, After upgrading from 7.2-STABLE to 8.0-BETA1 I encounter a problem when=20 connecting with firefox to a local apache server using the global=20 unicast IPv6 address of the local machine. pf.conf must be updated! My configuration: [root@avoriaz ~]# ifconfig em0 em0: flags=3D8843 metric 0 mtu = 1500 options=3D19b 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=3D"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 _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to = "freebsd-stable-unsubscribe@freebsd.org"