Re: parsing hostname -- implementation feedback

>> I appreciate this is not strictly correct, but I see no practical 
>> harm from defining the syntax in this way and asserting the form of 
>> the final domain label as an extra-syntactic constraint.  A (limited) 
>> few tests with my browser  suggest that it does not syntactically 
>> prohibit numeric top-level domain labels, but simply reports that the 
>> domain cannot be found.
>
> Doing that would cause the syntax to be ambiguous in regards to IPv4
> addresses, which is why that syntax was added to the specification
> in the first place.  The reason that literal IP addresses are 
> explicitly
> denoted is because applications are encouraged to convert them
> directly to numeric IP rather than send everything to a DNS resolver.

Never mind, it was already ambiguous.  *sigh*

....Roy