One Domain; Multiple IPs.

[Mark.Andrews at nominum.com]

> In article <9ivqj6$959 at pub3.rc.vix.com>,
> Brad Knowles  <brad.knowles at skynet.be> wrote:
> >
> >At 6:00 PM -0400 7/16/01, Kevin Darcy wrote:
> >
> >>  I agree. The protocol purists appear to be out of touch with the way DNS 
> is
> >>  evolving in the real world.
> >
> >	No, generally speaking, I believe that they've got the right 
> >idea.  The things that they say are protocol violations do tend to 
> >cause problems.  The issue is whether they cause worse problems than 
> >the other problems that they're trying to solve, and in many cases I 
> >would submit that this could well be true.
> 
> What kinds of problems do devices like Distributed Director cause?

	Try asking about things other than A records.  Some of the
	load balancers fail to do the rest of the protocol.

	Given that you usually delegate a single node to these boxes
	they should be able to answer NS and SOA queries for the name,
	return NODATA responses to queries for types that don't exist.
	If a subdomain does not exist it should return NXDOMAIN.

	I'm not sure if DD has these problems, but some of these boxes
	definitely do.

	Mark
> 
> This is not purely an academic question, since we make significant use of
> DD for some of our biggest customers.  If they're likely to cause problems,
> I'd like to know about it.
> 
> -- 
> Barry Margolin, barmar at genuity.net
> Genuity, Burlington, MA
> *** DON'T SEND TECHNICAL QUESTIONS DIRECTLY TO ME, post them to newsgroups.
> Please DON'T copy followups to me -- I'll assume it wasn't posted to the grou
> p.
> 
--
Mark Andrews, Nominum Inc.
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark.Andrews at nominum.com