AW: Q2: What mapping function should be used in a revised IDNA2008specification?

Georg Ochsner g.ochsner at
Wed Apr 8 12:33:48 CEST 2009

The MX registry has just prepared a grandfathering period for the introduction of second-level MX registrations. That means registrants of third-level domains can apply for the second-level pendent. The tricky part is, that there are 5 ccSLD at the moment (,,, and, hence possibly 5 registrants applying for the same new domain. So they had to add a "first come first served" process on top of the grandfathering...

That's a good example. They noticed that for them it was wrong not to have the second level domains available like in many other countries and made up their mind how to get out of it without unsettling the registrants or users. That's how change can be managed! I am sure what the Mexican registry can do, is no problem for the German and Austrian registry neither.


> -----Ursprüngliche Nachricht-----
> Von: idna-update-bounces at [mailto:idna-update-
> bounces at] Im Auftrag von "Martin J. Dürst"
> Gesendet: Mittwoch, 8. April 2009 03:38
> An: John C Klensin
> Cc: Alexander Mayrhofer; Harald Alvestrand; Vint Cerf; idna-
> update at
> Betreff: Re: Q2: What mapping function should be used in a revised
> IDNA2008specification?
> Hello John,
> Part of your problem (:-) is that you have been around and working on
> Internet stuff for longer than many or most of us. That's why you have
> such a long-term perspective. Others just don't have that (yet).
> Of course I fully agree with you regarding "Faßbier" and the like. I
> think it would be quite easy for the German and Austrian registry to
> announce the new availability of the " "ß" with a campaign along the
> lines
> "True  'ß' finally made available, please make sure you get yours"
> or some such.
> Regards,    Martin.
> On 2009/04/08 3:39, John C Klensin wrote:
> > Part of my problem understanding this is that, if I were a
> > registry in a German-speaking country, I'd assume that the
> > Internet was going to continue to expand (with organizations and
> > registrations expanding along with it).   I would therefore
> > assume that, over the next few decades, I'd far prefer to
> > explain to some folks that I previously told would have to live
> > without Eszett because of a bad IETF decision that the decision
> > had been reversed and that, if they wanted an Eszett-containing
> > name, they had better get it... rather than explaining, for the
> > next 20 years, why "Faßbier" is really spelled fassbier,
> > contrary to every dictionary in the country.  Explaining why
> > correctly-spelled nouns, starting in upper-case characters, come
> > back in lower case would just about as much aggravation as I
> > would want to wish for.
> >
> > Obviously, you should make whatever decisions you are making on
> > whatever basis you want to make them.  But I am surprised that
> > the longer-term, continued-growth, perspective doesn't seem to
> > be entering into the discussion.
> >
> > regards,
> >      john
> >
> > _______________________________________________
> > Idna-update mailing list
> > Idna-update at
> >
> --
> #-# Martin J. Dürst, Professor, Aoyama Gakuin University
> #-#   mailto:duerst at
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