On 27. 07. 20 12:44, Juergen Schoenwaelder wrote:
> On Mon, Jul 27, 2020 at 10:51:31AM +0200, Ladislav Lhotka wrote:
>> Juergen Schoenwaelder <[email protected]> writes:
>>
>>> So would the following do the right thing?
>>
>> The invert-match pattern also needs to be added in order to avoid reserved
>> labels:
>
> Why are they illegal? If we make them illegal, how are we going to
> deal with hosts that have non-ASCII names?
I am not able to find in what sense the "Reserved LDH" labels of RFC
5890 are really reserved, and I am not sure about the implications of
permitting "xn--..." hostnames to be explicitly configured.
If we want to allow non-ASCII names, then it would IMO be safer to use a
type that expects straight Unicode for lexical representation and leave
it to the implementations to convert to Punycode where necessary, e.g.
when querying DNS.
Lada
>
> /js
>
--
Ladislav Lhotka
Head, CZ.NIC Labs
PGP Key ID: 0xB8F92B08A9F76C67
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