Re: [netmod] 6991bis: domain-name

Lada,

I do not think we can simply enlarge the value set of inet:domain-name,
existing implementations using inet:domain-name may (rightfully) not
expect wildcards.

What we can do is to create a new definition that has a larger value
space. We can also consider to define inet:domain-name as a subset of
such a larger type as long as it results in the same value space.

/js

On Fri, Mar 29, 2019 at 11:20:13AM +0100, Ladislav Lhotka wrote:
> Hi,
> 
> as a follow-up to my comment during the NETMOD session, I want to propose the
> following update to the the inet:domain-name type. The aim is to include use
> cases that are currently rejected:
> 
> - classless in-addr.arpa delegations [RFC 2317], i.e. labels like "128/26"
> 
> - wildcards [RFC 4592], e.g. "*.example.net"
> 
> OLD
> 
>     pattern
>       '((([a-zA-Z0-9_]([a-zA-Z0-9\-_]){0,61})?[a-zA-Z0-9]\.)*'
>     + '([a-zA-Z0-9_]([a-zA-Z0-9\-_]){0,61})?[a-zA-Z0-9]\.?)'
>     + '|\.';
> 
> NEW
> 
>     pattern
>       '((\*\.)?(([a-zA-Z0-9_]([a-zA-Z0-9\-/_]){0,61})?[a-zA-Z0-9]\.)*'
>     + '([a-zA-Z0-9_]([a-zA-Z0-9\-/_]){0,61})?[a-zA-Z0-9]\.?)'
>     + '|\.';
> 
> Lada
> 
> -- 
> Ladislav Lhotka
> Head, CZ.NIC Labs
> PGP Key ID: 0xB8F92B08A9F76C67
> 
> 
> 
> 
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Juergen Schoenwaelder           Jacobs University Bremen gGmbH
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