New version of strawman for IDNAv2

Adam M. Costello idna-update.amc+0+ at
Sun Mar 1 23:59:33 CET 2009

John C Klensin <klensin at> wrote:

> --On Friday, February 27, 2009 14:59 -0800 Mark Davis
> <mark at> wrote:
> > I am less familiar with the case of Sinhala, but I believe that the
> > main issue with all of the other Indic-based scripts is the same
> > as the sigma case.  That is, it is not a significant problem to
> > identify input strings A and B; the problem is that the one that
> > is returned from the DNS is not the "correct" form.  That is, the
> > canonicalization and equivalence class are acceptable, but the
> > particular representative of that equivalence class that is in the
> > DNS is not the preferred form.
> And that is a problem that, unless someone has more insight into the
> situation than I do, can be solved only with server-side matching.

I don't see why it's a problem at all.  How common is it for
applications to display domain names obtained from DNS?  I'm not aware
that this ever happens except for logging/debugging purposes.


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