Domain name label length

Hello,

So, a domain name label looks something like this, in general, right?

_label = _let >> *(_let | _dig | _hyp) >> (_let | _dig);

However, another stipulation is that its length must be <=63 according
to the RFC:

https://tools.ietf.org/html/rfc1034#section-3.5

So... Is there a way to constrain that using Qi?

Cheers,

Michael Powell

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