On Thursday, November 3, 2016 4:03:58 PM CET Patrik Fältström wrote:
> On 3 Nov 2016, at 15:44, Simon Josefsson wrote:
> > Is there any widely used network application out there that uses
> > NFC+IDNA2008 that you can point to?
>
> Registries do.
>
> If you register (for example) in .DE you have to register both the domain
> name with ß and with ss to cover the alternatives (and implementations that
> still follow IDNA2003 and not IDNA2008). And this is also the
> recommendation of DENIC.

Sure ?

$ host strasse.de
strasse.de has address 72.52.4.119

$ idn2 straße.de
xn--strae-oqa.de

$ host xn--strae-oqa.de
xn--strae-oqa.de has address 81.169.145.78
xn--strae-oqa.de has IPv6 address 2a01:238:20a:202:1078::
xn--strae-oqa.de mail is handled by 5 smtpin.rzone.de.

Tim

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