Question about "proper" way to run v6/v4 website

[Doug Barton]

On Tue, 1 May 2007, Gert Doering wrote:

> Hi,
>
> On Tue, May 01, 2007 at 12:30:18PM -0700, Doug Barton wrote:
>> protocols. So for example (with silly fake IP addresses):
>>
>> ns1	A	1.2.3.4
>> 	AAAA	2001::1:2:3:4
>> ns2	A	1.2.3.5
>> 	AAAA	2001::1:2:3:5
>>
>> The v4 view of your zone would have only A records in it, and be
>> served by the name server instances listening on the v4 addresses. The
>> v6 view would have only AAAA records for those sites of yours that
>> support them (and A records for sites that don't, obviously), and be
>> served by the instances listening on the v6 addresses. (I can go
>> through the exercise of setting up the config for this if you wish,
>> contact me for rates). :)
>>
>> In this way the only clients that will get AAAA records for a given
>> host are those that actually query your servers over IPv6, thus
>> guaranteeing (as much as anyone can at this stage in the game) that
>> they will also be able to access the _content_ over v6.
>
> Given that end users normally query "some recursive resolver on the
> way", and rarely directly query the authoritative server hosting the
> domains, I wonder why there would be any relationship between
> "the protocols that the end user machine can use" and "the protocols
> that the recursive DNS server can use".
>
> Specific example: if our customers use our recursive DNS service, our
> DNS *will* use v6 queries (if the target DNS server has v6 connectivity),
> but about 95% of our customers do not have v6 connectivity yet, so they
> would not be able to reach the destination.

Since you and Matyas had basically the same question, I'll chose this one to 
respond to. I actually have an answer to your question, but first I have a 
question for you. What operational goal are you trying to accomplish by 
configuring your DNS in that way? And no, this is not a theoretical 
question. We are, as has been stated before, in a transition period, and the 
transition isn't going to go any further than it has (which isn't much) if 
we can't come up with real solutions to the problems people are currently 
experiencing.

Doug

-- 
 	If you're never wrong, you're not trying hard enough.