6bone/ip6.int interaction
Doug Barton
dougb at dougbarton.us
Tue Jun 13 20:56:23 CEST 2006
Matt Ryanczak wrote:
> Hi Doug,
>
> We're working with our IPv6 provider to resolve this issue. We have
> found that this IPv6 connection is often times not reachable from
> various parts of the IPv6 Internet. It does appear that most people have
> connectivity.
Ouch. If it helps, here is a trace from my location (Earthlink IPv6 tunnel):
traceroute6 tinnie.arin.net
traceroute6 to tinnie.arin.net (2001:440:2000:1::22), 64 hops max, 12 byte
packets
1 wrt54g6 0.737 ms 0.551 ms 0.504 ms
2 ::209.179.5.34 17.613 ms 19.726 ms 15.731 ms
3 2001:4840:ffff::1 15.703 ms 15.098 ms 17.620 ms
4 earthlink-gw.customer.klax.occaid.net 18.560 ms 16.934 ms 18.365 ms
5 2.fe-0-0.cr1.lax3.us.occaid.net 20.919 ms 18.216 ms 25.113 ms
6 8.ge-0-0.cr1.lax1.us.occaid.net 21.167 ms 18.531 ms 22.922 ms
7 27.fe0-0.cr1.dfw1.us.occaid.net 54.774 ms 54.648 ms 54.170 ms
8 20.fe1-0.ar1.ewr2.us.occaid.net 93.173 ms 93.757 ms 101.193 ms
9 sl-bb1v6-nyc-t-17.sprintv6.net 197.932 ms 207.183 ms 198.065 ms
10 sl-bb1v6-rly-t-1003.sprintv6.net 218.845 ms 217.692 ms 217.421 ms
11 2001:440:1239:7000::2 223.643 ms 224.664 ms 224.401 ms
12 * * *
> As for not being reachable over IPv4, I have an idea of what might be
> causing this. The IP address for tinnie.arin.net changed last Thursday
> do to internal renumbering at ARIN, it should be resolving to
> 199.43.0.195 for you, but you may be getting 69.25.34.195 because of a
> glue record that network solutions inserted into the .net gltd for
> tinnie.arin.net.
Confirmed. Not only do I have that in my cache, but since *.gtld-servers.net
have it as a glue record (with a 2 day TTL), it won't go away till they fix
it. This is sort of a curious thing for them to do, since it's not currently
listed in the delegation of NET (obviously), or arin.net.
> ARIN did not ask for this "service" and we are working
> with them to resolve the issue.
The only explanation I can think of is that it was mentioned in the
delegation of arin.net at one time, and the glue record was not removed when
the delegation record was. But that's just a guess.
In any case, thanks for the quick response. Those of us that actually care
about reverse DNS appreciate the fine work that you folks do.
Doug
--
If you're never wrong, you're not trying hard enough
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