[dns-operations] Signaling client protocol to authority

[Dan Collins]

On Sun, Jan 16, 2011 at 1:46 PM, Patrick W. Gilmore <patrick at ianai.net> wrote:
> The problem is end users who have no v6 connectivity ask for quad-A, and they do it over v4.

Forgive me, but...exactly. Isn't that the problem? Not that a DNS
server sends them an AAAA record that they can't use, but that they
asked for an AAAA record that they can't use. The problem lies in the
client that's making requests for an address using a protocol that it
ought to know it can't use, and the problem is absolutely not that the
server is doing exactly what the client asked it to do.

It isn't the job of a DNS server to decide what the DNS client actually wants.

--Dan