[115444] in North American Network Operators' Group
Re: ipv6 only DNS?
daemon@ATHENA.MIT.EDU (Joe Abley)
Sun Jun 21 12:08:59 2009
From: Joe Abley <jabley@hopcount.ca>
To: Rui Ribeiro <racribeiro@gmail.com>
In-Reply-To: <943c86c90906210736o2a5e93edk12b1098f9b3641e3@mail.gmail.com>
Date: Sun, 21 Jun 2009 12:06:51 -0400
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On 21-Jun-2009, at 10:36, Rui Ribeiro wrote:
> An IPv6 only device can "hit" your server if all the DNS hierachy
> resolves through IPv6. It works the same way as in IPv4.
"Resolves through IPv6" implies a mixture of IPv6 transport and RRSet
availability. To add some more details, you need:
- AAAA records in your hints file, so you can complete a useful
priming query
- AAAA glue in the zones being followed to answer your questions,
from the root down
- all NS sets above every zone cut to include at least one reachable
nameserver that can be queried using IPv6 transport
- the resources you're ultimately looking for to have AAAA records
(assuming your goal is to find an address)
Some time ago I checked the ORG and INFO registries and discovered
that the number of host objects there with IPv6 address attributes was
very small. I presumed at the time that it was either hard to find a
registrar that would support IPv6 addresses for hosts, or that people
were just not paying much attention to v6-only resolution.
Joe
