Routing over tunnels

[Jason Gunthorpe <jgg@ualberta.ca>]

Hi all,

Does anyone know off hand why TTLs on the tunnels I setup don't seem to be
working quite right? Traceroute from 'our side' of the routing looks
like:

traceroute6 to pandora.ipv6.debian.org (3ffe:600:8000:8::32) from
3ffe:a00:e:1::2, 30 hops max, 24 byte packets
 1  3ffe:a00:e:2:240:33ff:fea6:8292  64.471 ms  47.866 ms  47.865 ms
 2  * * *
 3  * * *
 4  * * *
 5  * * *
 6  * * *
 7  * * *
 8  * * *
 9  * * *
10  * * *
11  3ffe:600:8000:8::32  349.709 ms  327.242 ms  331.149 ms

while from the public side you see:

traceroute6 to lully.ipv6.debian.org (3ffe:a00:e:1::2) from
3ffe:600:8000:8::32, 30 hops max, 16 byte packets
 1  ir4.Amsterdam.surf.net (3ffe:600:8000::11)  4.181 ms * 3.785 ms
 2  surfnet-if.6r1.doc.london.ip6.pipex.net (3ffe:1100:0:c09::1)  14.829 ms *  14.426 ms
 3  doc-6r1-if.6r1.paloalto.ip6.pipex.net (2001:600:4:4::2)  172.17 ms * 173.119 ms
 4  3ffe:1280:1001:1::3 (3ffe:1280:1001:1::3)  181.516 ms *  175.124 ms
 5  3ffe:800::fffe:0:0:9 (3ffe:800::fffe:0:0:9)  264.125 ms *  211.067 ms
 6  3ffe:a00:2:2::35 (3ffe:a00:2:2::35)  277.964 ms  278.16 ms  287.974 ms
 7  3ffe:a00:e:1::2 (3ffe:a00:e:1::2)  335.486 ms  357.405 ms  327.973 ms

IIRC reading this was a TTL problem, but I don't remember the details..

Anyone know ?

(btw lully is back on the 6bone and lully has an FTP accessible debian
 mirror)

Thanks,
Jason