Server Fault is a question and answer site for system and network administrators. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top is listed with a registrar -- specifically,

I want to host a subdomain in-house, specifically

I am using an ipv6 gateway, specifically gogo6, to have a public IPv6 address. The IP address looks like 2001:xxxx:xx47.

Then http://[2001:xxxx:xx47] goes to my test site (an instance of IIS7). I can add a quad-A record for my primary site -- AAAA 2001:xxxx:xx47. Then http// loads correctly.

Must I add an A or quad-A record for all to my DNS manager for Or can I delegate DNS queries to * to the machine at [2001:xxxx:xx47]?

I have tried to add a AAAA record for to [2001:xxxx:xx47], and then add an NS entry for to, but browsing then results in "DNS lookup error" from my browser.

Is this a configurable scenario? Can DNS for subdomain only be delegated to IPv4 addresses?

share|improve this question
up vote 2 down vote accepted

No, there is no difference between IPv4 and IPv6 in that respect because DNS subdomains are not delegated to addresses, only to names. Here is how it appears in a typical zone file:  IN   NS   ns1.something.example.
                   IN   NS   ns2.something.example.

See? You do not indicate the IP addresses of ns1 and ns2. They can be IPv4, IPv6 or both.

But do you really need delegation? From what you describe, adding a AAAA record for via the interface of your DNS hoster should be sufficient.

Now, for the "DNS lookup error", it may depend on the resolver you use (typically the one from your IAP). Some do not have IPv6 connectivity at all (a shame in 2010 but it happens).

share|improve this answer
For the scenario that I am trying to test, I would consider adding AAAA records to my DNS hoster as a workaround. Which is what I am currently doing. I will try my original method again, and see if perhaps I hadn't missed a variable -- caches flushing, etc. – mpbloch Apr 13 '10 at 22:52

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.