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Re: [idn] WG last call documents

Adam M. Costello writes:
> If you have case-sensitive names that you're trying to map onto
> domain names, you're going to run into that limitation.

False. I have already given an example: the mailbox name stored in an
SOA record.

One SOA record can say Johnny.fbi.gov, for example, while another one
says johnny.fbi.gov. Mail in the first case must go to Johnny@fbi.gov.
Mail in the second case must go to johnny@fbi.gov.

There is no guarantee that these are the same address. If you screw up
the case, you are violating RFC 1034 and RFC 1035.

Your ignorance of this use of DNS is typical of the carelessness that
pervades the IDNA design.

> Domain names may be case-preserving to some extent, but they do not
> accomodate case-sensitive names.

RFC 1035, section 2.3.3, final paragraph, clearly and explicitly allows
case-sensitive names in DNS. It even uses the words ``case-sensitive.''
Are you completely unable to read?

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