Date: Fri, 10 Jul 2009 15:07:16 -0700 From: "Li, Qing" <qing.li@bluecoat.com> To: <freebsd-current@freebsd.org> Subject: FW: 8.0-BETA1 - for the record - different paths followed by IPv4and IPv6 for 'local' connections Message-ID: <B583FBF374231F4A89607B4D08578A4304673662@bcs-mail03.internal.cacheflow.com> References: <4A5734C3.3000806@restart.be> <B583FBF374231F4A89607B4D08578A4304673660@bcs-mail03.internal.cacheflow.com>
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-----Original Message----- From: owner-freebsd-stable@freebsd.org on behalf of Li, Qing Sent: Fri 7/10/2009 2:51 PM To: Henri Hennebert; freebsd-stable@freebsd.org; freebsd-st@freebsd.org Subject: RE: 8.0-BETA1 - for the record - different paths followed by = IPv4and IPv6 for 'local' connections =20 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<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu = 1500 options=3D19b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4> 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 <half-duplex>) 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" _______________________________________________ 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"
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