On Wed, Nov 17, 2010 at 11:20:56AM +0000, Tony Finch <[email protected]> wrote a message of 63 lines which said:
> That is blatantly broken. Yes. > There is no need for any heuristic to tell IP addresses and host > names apart. To elaborate on that: if a program receives the string 192.0.2.4 and the TLD ".4" is delegated, the tie is broken by application of a requirment of RCF 1123 "The host SHOULD check the string syntactically for a dotted-decimal number before looking it up in the Domain Name System." So, there is no ambiguity: 192.0.2.4 is always an IP address, even if ICANN delegates ".4". [My point is that draft-liman-tld-names is probably unecessary but, anyway, it should not introduce new rules such as forbidding digits in ASCII TLDs. A simpler document saying "The sentence 'the highest-level component label will be alphabetic' in RFC 1123 was a statement of fact at this time, NOT a normative protocol requirment." would have been sufficient.] _______________________________________________ DNSOP mailing list [email protected] https://www.ietf.org/mailman/listinfo/dnsop
