Re: [DNSOP] DNSOP Digest, Vol 125, Issue 31

Viktor Dukhovni <ietf-dane@dukhovni.org> Thu, 13 April 2017 18:41 UTC

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From: Viktor Dukhovni <ietf-dane@dukhovni.org>
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Subject: Re: [DNSOP] DNSOP Digest, Vol 125, Issue 31
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> On Apr 13, 2017, at 7:30 AM, dnsop-request@ietf.org wrote:
> 
> Well, IIRC they sensibly converged on a case-folded normal form
> that ensures that https://Духовный.org maps to the same underlying
> wire-form domain as https://духовный.org, i.e. both result in
> queries for xn--b1adqpd3ao5c.org.  AFAIK, those would generally be
> different domains under IDNA2008.

What I should have said is that the variant with the upper case
first letter is invalid (as opposed to being "different") in
IDNA2008.  This is IMHO a poor user interface, so running code
will generally go with UTS#46 (increasingly non-transitional)
mappings.

-- 
	Viktor.