[125860] in North American Network Operators' Group
Re: Connectivity to an IPv6-only site
daemon@ATHENA.MIT.EDU (Owen DeLong)
Sun Apr 25 10:00:08 2010
From: Owen DeLong <owen@delong.com>
In-Reply-To: <87vdbg4a4o.fsf@doris.mad.asaurus.net>
Date: Sun, 25 Apr 2010 06:58:19 -0700
To: Kevin Buhr <buhr+nanog@asaurus.net>
Cc: NANOG <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Apr 24, 2010, at 6:02 PM, Kevin Buhr wrote:
> Valdis.Kletnieks@vt.edu writes:
>>=20
>> Ours are currently intentionally configured to not issue queries over =
IPv6,
>> because at one time, there were *so many* sites that listed =
unreachable quad-A
>> NS records. Our DNS guy is more than willing to revisit that config =
switch.
>>=20
>> Anybody have some statistics on what the current situation is?
>=20
> I just dredged a list of 570 one, two, and three-dot domains from a
> mailing list (a bunch of recent messages on debian-user). Digging
> them gave 919 unique nameserver domain names, and digging those gave
> 119 AAAA addresses. Of these, 106 responded to a DNS query (for the
> nameserver's own AAAA address) in some fashion, and 13 didn't.
>=20
> Of the 13, 5 were cogentco.com DNS servers and unreachable over my HE
> tunnel thanks to ongoing peering disputes.=20
>=20
Yeah, sorry about that, we really are trying to resolve this. We're =
here,
we'll peer. It'd be nice if Cogent would, too.
We really have done everything we can think of to get Cogent to peer.
We even baked them a really nice cake.
If you are a Cogent customer, feel free to ask them why they won't peer
IPv6 with HE.
> In all cases, the nameservers with AAAA addresses had A addresses as
> well.
Owen
