[dns-operations] Signaling client protocol to authority

[Matthew Pounsett]

On 2011/01/16, at 08:09, Patrick W. Gilmore wrote:

> Everyone,
> 
> This is perhaps a silly question as I have not been keeping up with the list, but I cannot find this with a few minutes of searching.  (Although RFC2671 comes up a lot, so maybe I'm just not tweaking my search parameters correctly.)
> 
> Are there any ideas or efforts for a recursive NS to signal the authoritative NS whether the client used v4 or v6 to request the record?

There's nothing currently in protocol to send that signal.  I haven't heard of anyone working on anything to add that feature, and I'm not sure why it would be useful.

Is there a particular reason the authoritative server wouldn't just look at the IP address of the client to figure it out?