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Re: #1132: Allowing IP addresses as path-identiites - Poll result



In <> Harald Tveit Alvestrand <harald@xxxxxxxxxxxxx> writes:

>--On 15. september 2005 16:04 +0000 Charles Lindsey <chl@xxxxxxxxxxxxxxxx>=20
>wrote:

>How about this?
>>
>>            If a dotted-decimal number can be entered without such
>>            identifying delimiters, then a full syntactic check must be
>>            made, because a segment of a host domain name is now allowed
>>            to begin with a digit and could legally be entirely numeric
>>            (see Section 6.1.2.4).  However, a valid host name can never
>>            have the dotted-decimal form #.#.#.#, since at least the
>>            highest-level component label will be alphabetic.
>             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^


OK. Point noted (though "will be alphabetic" is not quite the same thing
as "MUST be alphabetic"). Anyway, all the syntaxes under discussion
incorporate it.

>Actually, we are somewhat at the mercy of ICANN here, but so far, I haven't
>seen even a single application for an all-numeric (or even seminumeric) =
>TLD.

We are actually at the mercy of ICANN for several things, including
"example", "POSTED", "MISMATCH, etc.

-- 
Charles H. Lindsey ---------At Home, doing my own thing------------------------
Tel: +44 161 436 6131 Fax: +44 161 436 6133   Web: http://www.cs.man.ac.uk/~chl
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