On Thu, 18 Aug 2005, Philip Hazel wrote:
>
> Note that, as a result of pressure long ago from a certain multinational
> company whose name starts with the digit 3, components of domain names
> are permitted start with digits. Thus, an IPv4 address is a
> syntactically valid domain name.
No it is not. RFC 1123 says "a valid host name can never have the
dotted-decimal form #.#.#.#, since at least the highest-level component
label will be alphabetic." Good name servers should object to zones with
IP-address-like MX or CNAME or PTR target names.
Tony.
--
<fanf@???> <dot@???>
http://dotat.at/ ${sg{\N${sg{\
N\}{([^N]*)(.)(.)(.*)}{\$1\$3\$2\$1\$3\n\$2\$3\$4\$3\n\$3\$2\$4}}\
\N}{([^N]*)(.)(.)(.*)}{\$1\$3\$2\$1\$3\n\$2\$3\$4\$3\n\$3\$2\$4}}
