Date: Thu, 07 Dec 2006 17:44:43 -0500 From: Joe Marcus Clarke <marcus@FreeBSD.org> To: current@FreeBSD.org Subject: Problem with gif and IPv6 in -CURRENT Message-ID: <4578995B.4090305@FreeBSD.org>
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I am running:
FreeBSD jclarke-pc 7.0-CURRENT FreeBSD 7.0-CURRENT #81: Thu Dec 7
16:06:32 EST 2006 marcus@jclarke-pc:/usr/obj/usr/src/sys/JCLARKE-PC
i386
And I am trying to get a gif IPv6 tunnel up to a Cisco router. I can
get this to work on a 6.2-PRERELEASE server, but the -CURRENT machine
always claims there is no route to the far end of the point-to-point
link. Here is my config:
# ifconfig gif0 create
# ifconfig gif0 tunnel 172.18.173.17 10.29.100.75
# ifconfig gif0 inet6 3ffe:604::2 3ffe:604::1 prefixlen 128
# ifconfig gi0
gif0: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> mtu 1280
tunnel inet 172.18.173.17 --> 10.29.100.75
inet6 fe80::211:11ff:fe10:461e%gif0 prefixlen 64 scopeid 0x4
inet6 3ffe:604::2 --> 3ffe:604::1 prefixlen 128
This looks good, and I can ping my local 3ffe:604::2 address. However,
when I ping 3ffe:604::1, I get:
ping6: UDP connect: No route to host
It's not lying. I don't have a route to 3ffe:604::1:
# netstat -nr
...
::/96 ::1 UGRS
lo0
::1 ::1 UHL
lo0
::ffff:0.0.0.0/96 ::1 UGRS
lo0
2003:a02::/64 link#1 UC
em0
2003:a02::1 00:11:11:10:46:1e UHL
lo0
3ffe:604::2 link#4 UHL
lo0
fe80::/10 ::1 UGRS
lo0
fe80::%em0/64 link#1 UC
em0
fe80::211:11ff:fe10:461e%em0 00:11:11:10:46:1e UHL
lo0
fe80::%lo0/64 fe80::1%lo0 U
lo0
fe80::1%lo0 link#3 UHL
lo0
fe80::%gif0/64 link#4 UC
gif0
fe80::211:11ff:fe10:461e%gif0 link#4 UHL
lo0
ff01:1::/32 link#1 UC
em0
ff01:3::/32 ::1 UC
lo0
ff01:4::/32 link#4 UC
gif0
ff02::/16 ::1 UGRS
lo0
ff02::%em0/32 link#1 UC
em0
ff02::%lo0/32 ::1 UC
lo0
ff02::%gif0/32 link#4 UC
gif0
The IPv4 address on the other end of the tunnel is reachable, and the
Cisco router has no problems finding a route to the FreeBSD machine.
Here is the config from the Cisco side:
interface Tunnel1
no ip address
load-interval 30
ipv6 address 3FFE:604::1/126
ipv6 enable
tunnel source 10.29.100.75
tunnel destination 172.18.173.17
tunnel mode ipv6ip
Why isn't the other end of the point-to-point tunnel being instantiated
in the routing table? If I take this exact config to a 6.2 box, this
works just fine, and the far end of the PTP link is instantiated in the
routing table. Thanks for any clues you can provide.
Joe
- --
Joe Marcus Clarke
FreeBSD GNOME Team :: gnome@FreeBSD.org
FreeNode / #freebsd-gnome
http://www.FreeBSD.org/gnome
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