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Date:      Thu, 03 Sep 2009 04:38:40 +0900 (JST)
From:      Hiroki Sato <hrs@FreeBSD.org>
To:        qing.li@bluecoat.com
Cc:        qingli@FreeBSD.org, freebsd-current@FreeBSD.org, freebsd-net@FreeBSD.org
Subject:   Re: IPv6 regression on 8.x
Message-ID:  <20090903.043840.213910223.hrs@allbsd.org>
In-Reply-To: <20090902.155958.08019398.hrs@allbsd.org>
References:  <20090830.024420.174808572.hrs@allbsd.org> <B583FBF374231F4A89607B4D08578A43052EEDE6@bcs-mail03.internal.cacheflow.com> <20090902.155958.08019398.hrs@allbsd.org>

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Hiroki Sato <hrs@freebsd.org> wrote
  in <20090902.155958.08019398.hrs@allbsd.org>:

hr>  Anyway, I will try the a-box-with-three-NICs case when I return home
hr>  today.  I didn't try it.

 Okay, I tried the case of all of NICs on a host and confirmed it
 works fine.

hr>
hr> qi> Would it be possible for you to email me your system configuration
hr> qi> produced from "ifconfig" and "netstat" privately ?
hr>
hr>  Sure.  I will send them to you later.

The results of ifconfig and netstat are the following.  These are by
another configuration from one I sent in the previous email, but the
symptom is still reproducible:

box-A (RELENG_7):

re0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        ether 00:26:18:41:64:1a
        inet6 fe80::226:18ff:fe41:641a%re0 prefixlen 64 scopeid 0x2
        inet6 2001:db8:1::6 prefixlen 64

Destination                       Gateway                       Flags      Netif Expire
::/96                             ::1                           UGRS        lo0 =>
default                           fe80::21a:6dff:feb9:fd1b%ng1  UGS         ng1
::1                               ::1                           UHL         lo0
::ffff:0.0.0.0/96                 ::1                           UGRS        lo0
2001:db8:1::                      00:13:a9:ff:63:e6             UHLW        re0 =>
2001:db8:1::/64                   link#2                        UC          re0
2001:db8:1::1                     00:13:a9:ff:63:e6             UHLW        re0
2001:db8:1::6                     00:26:18:41:64:1a             UHL         lo0

box-B (CURRENT):

msk0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        ether 00:13:a9:ff:63:e6
        inet6 fe80::213:a9ff:feff:63e6%msk0 prefixlen 64 scopeid 0x1
        inet6 2001:db8:1:: prefixlen 64 anycast

gif0: flags=8011<UP,POINTOPOINT,MULTICAST> metric 0 mtu 1280
        inet6 2001:db8:2::1 prefixlen 64
        inet6 fe80::213:a9ff:feff:63e6%gif0 prefixlen 64 scopeid 0x7

Destination                       Gateway                       Flags      Netif Expire
::/96                             ::1                           UGRS        lo0 =>
default                           fe80::214:1bff:fe39:281a%msk0 UG         msk0
::1                               ::1                           UH          lo0
::ffff:0.0.0.0/96                 ::1                           UGRS        lo0
2001:db8:1::                      link#5                        UHS         lo0 =>
2001:db8:1::/64                   link#1                        U          msk0
2001:db8:2::/64                   link#7                        U          gif0
2001:db8:2::1                     link#5                        UHS         lo0
fe80::/10                         ::1                           UGRS        lo0
fe80::%msk0/64                    link#1                        U          msk0
fe80::213:a9ff:feff:63e6%msk0     link#5                        UHS         lo0
fe80::%lo0/64                     link#5                        U           lo0
fe80::%gif0/64                    link#7                        U          gif0
fe80::213:a9ff:feff:63e6%gif0     link#5                        UHS         lo0
ff01:1::/32                       fe80::213:a9ff:feff:63e6%msk0 U          msk0
ff01:5::/32                       ::1                           U           lo0
ff01:7::/32                       2001:db8:2::1                 U          gif0
ff02::/16                         ::1                           UGRS        lo0
ff02::%msk0/32                    fe80::213:a9ff:feff:63e6%msk0 U          msk0
ff02::%lo0/32                     ::1                           U           lo0
ff02::%gif0/32                    2001:db8:2::1                 U          gif0

 When doing "ping6 2001:db8:1::" from box-A, the source address becomes
 2001:db8:1::6 (this is correct) and a link-local address on msk0 on
 box-B replies.

-- Hiroki

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