Lookup for reserved LDH labels

Marcos Sanz sanz at denic.de
Wed Nov 7 14:18:37 CET 2012

[big historical snip]

> But the
> conclusion that IDNA2008 does not permit a conformant
> implementation to look up something is knows is not a [valid]
> A-label is very clear.

Then it will not be difficult for somebody to point us to the relevant 
part in the spec that allegedly states that the lookup algorithm must fail 
for reserved LDH-labels that are not XN-labels (e.g. "ad--acta"). I'd 
really appreciate if somebody did that.


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