DNS Connection Question

[dsr at tao.merseine.nu (dsr at tao.merseine.nu)]

On Wed, Oct 20, 2004 at 11:14:06PM +0900, Derek Martin wrote:
> Off the top of my headI don't know exactly how DNS is implmented, but
> UDP doesn't require any of this -- all that is required are your
> initial packet containing your request, and the server's response.  At
> least in theory, UDP should be faster.  That's one reason why people
> use it even though it is stateless, and I believe that DNS is
> implemented this way precicely for reasons of efficiency. 
> 
> Having not done IT stuff for a couple of years now, I'm pretty rusty,
> so I'm sure someone will clean up my mess if I am mistaken...  ;-)

Virtually every nameserver will have authoritative records for
"localhost" (although they may be "NXDOMAIN"). That should be a
minimal 1 packet request, 1 packet response, no waiting.

 dig localhost @suspected_nameserver

-dsr-