mailman.nanog.org ?

[Olipro]

On Wednesday 27 Jul 2011 08:39:04 Kurt Jaeger wrote:
> Hi!
> 
> The website is only reachable via v4, but dns announces v6 as well ?
> 
> $ any mailman.nanog.org
> mailman.nanog.org has IPv6 address 2001:1838::cc5d:d48a
> mailman.nanog.org has address 204.93.212.138
> 
> but:
> 
> traceroute6 to mailman.nanog.org (2001:1838::cc5d:d48a) from
> 2001:14f8:2:2::1a, 64 hops max, 12 byte packets 1  gatekeeper-nepintern 
> 0.526 ms  0.286 ms  0.282 ms
>  2  core3  0.513 ms  0.483 ms  0.491 ms
>  3  2001:14f8:1:1:ffff:ffff:ffff:ffff  6.113 ms  5.750 ms  5.862 ms
>  4  LFnet.FRA-12-eth020-372.v6.lambdanet.net  10.726 ms  14.837 ms  9.872
> ms 5  AMS-2-pos300.v6.lambdanet.net  42.095 ms  34.702 ms  40.840 ms 6 
> 2001:7f8:1::a500:4436:1  35.099 ms  34.987 ms  34.957 ms
>  7  ae3-60g.cr1.ams2.nl.nlayer.net  34.972 ms  34.831 ms  34.853 ms
>  8  xe-1-3-0-111.cr1.ams2.nl.nlayer.net  34.831 ms  35.306 ms  34.942 ms
>  9  unknown.ipv6.scnet.net  35.855 ms  35.868 ms
>     unknown.ipv6.scnet.net  35.894 ms
> 10  unknown.ipv6.scnet.net  185.057 ms
>     unknown.ipv6.scnet.net  127.401 ms  85.189 ms
> 11  unknown.ipv6.scnet.net  178.873 ms
>     unknown.ipv6.scnet.net  178.256 ms  214.091 ms
> 12  unknown.ipv6.scnet.net  176.114 ms
>     unknown.ipv6.scnet.net  213.318 ms
>     unknown.ipv6.scnet.net  187.660 ms
> 
> Similar from RIPE RIS looking glass.
> 
> traceroute to 2001:1838::cc5d:d48a (2001:1838::cc5d:d48a), 30 hops max, 40
> byte packets 1  gw.ipv6.dev.nikrtr.ripe.net (2001:67c:2e8:2::1:1)  0.814
> ms  0.982 ms  1.121 ms 2  amsix-501.xe-0-0-0.jun1.bit-1.network.bit.nl
> (2001:7f8:1::a501:2859:2)  1.898 ms  1.910 ms  1.949 ms 3 
> 20gigabitethernet1-3.core1.ams1.ipv6.he.net (2001:7f8:1::a500:6939:1) 
> 3.658 ms  3.588 ms  3.620 ms 4  2001:7f8:1::a500:4436:1
> (2001:7f8:1::a500:4436:1)  4.439 ms  4.275 ms  4.382 ms 5 
> ae3-60g.cr1.ams2.nl.nlayer.net (2001:590::4516:8bee)  3.881 ms  3.792 ms 
> 3.860 ms 6  xe-1-3-0-111.cr1.ams2.nl.nlayer.net (2001:590::4516:8b02) 
> 4.023 ms  4.015 ms  4.047 ms 7  unknown.ipv6.scnet.net
> (2001:1838::cdea:dcc2)  5.262 ms  5.291 ms  5.330 ms 8 
> unknown.ipv6.scnet.net (2001:1838::cdea:ff12)  103.729 ms
> unknown.ipv6.scnet.net (2001:1838::cdea:dcc9)  5.194 ms  5.493 ms 9 
> unknown.ipv6.scnet.net (2001:1838::cdea:ff12)  103.796 ms
> unknown.ipv6.scnet.net (2001:1838::4b66:3e9)  109.000 ms  109.440 ms 10 
> unknown.ipv6.scnet.net (2001:1838::4b66:3e9)  109.204 ms
> unknown.ipv6.scnet.net (2001:1838:2000::4b66:42)  128.785 ms  129.019 ms
> 11  * unknown.ipv6.scnet.net (2001:1838:2000::4b66:42)  129.432 ms * 12  *
> * *
> 13  * * *
> 
> Any ideas ?

Yes, their mailman is indeed broken over IPv6, I've CC'd them on this e-mail, 
you can also contact them directly if you wish.