A-label definition

[Mark Andrews]

> Even if the answer is "yes, but only to prevent confusion with
> IPv4 addresses", one could still have an FQDN of 1.2.3.4.5 or
> 1.2.3, as long as 1.2.3.4 is avoided.  I'd rather not, if only
> because I can imagine ways in which parsers based on other
> assumptions, DNAMEs, and mappings to or from reverse forms could
> lead to trouble, but, again, that is a matter of conservative
> preferences, not because there would be serious problems for
> very careful applications.

	Most applications will accept 127.1 for 127.0.0.1.

	Anything that matches valid inet_addr() input is problematic
	not just dotted decimal.

	Mark

-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark_Andrews at isc.org