[dns-operations] Signaling client protocol to authority

[Patrick W. Gilmore]

On Jan 16, 2011, at 11:44 AM, Matthew Pounsett wrote:
> On 2011/01/16, at 08:09, Patrick W. Gilmore wrote:

>> 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?

If you are not running the client-IP draft, how do you know the IP address of the client?

Or are you assuming everyone will configure / code / whatever that draft?

-- 
TTFN,
patrick