Re: [idn] comments on IDNA-04

[David Hopwood <david.hopwood@zetnet.co.uk>]

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David Hopwood wrote:
> The only minor issue I can think of relating to this choice, is that
> using a prefix means that an ACE label can end with a digit, and using
> a suffix means that it can begin with a digit. That might be relevant
> for top-level IDN labels, since some existing software might only check
> whether the last character is a digit in order to distinguish a domain name
> from a dotted-decimal IPv4 address. (The correct test, implied but not
> explicitly stated in RFC 1035, is to check whether the top label consists
> *only* of ASCII digits.)

Actually it is stated in RFC 1123, section 2.1.

- -- 
David Hopwood <david.hopwood@zetnet.co.uk>

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