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To: dnsop@cafax.se
From: "D. J. Bernstein" <djb@cr.yp.to>
Date: 18 Jul 2003 09:14:36 -0000
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Subject: Re: regarding the respsize draft: preferring glue of certain types

Pekka Savola writes:
> Someone else with different transport protocol capabilities asks the
> resolver about the addresses of these servers -- and get a partial response.

So what? Let's focus on what actually works from the user's perspective,
not on religious concepts such as ``partial responses.'' Can you give a
concrete example showing how the user would encounter a failure?

To forestall irrelevant examples, let me emphasize once again that we're
talking about DNS server addresses, not HTTP server addresses.

> You're assuming that if you reach one IPv4 address, you can reach all.

Ever heard of ``global addressing''? Right now, you aren't on the
Internet if you can't reach the entire public IPv4 address space. In the
future, if everyone with a public IPv4 address acquires a public IPv6
address, you'll be able to deploy a site that doesn't have any IPv4
access. Either way, the assumption is valid.

---D. J. Bernstein, Associate Professor, Department of Mathematics,
Statistics, and Computer Science, University of Illinois at Chicago
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