Nslookup and fully qualified name
staceyw at mvps.org
Sat Jan 24 17:02:02 UTC 2004
That is nslookup doing that, not bind. Dig does not try that without
"M Alan C" <my00sc00by at yahoo.com> wrote in message
news:butqnr$t9v$1 at sf1.isc.org...
> Even if RFC 1123 says it can be done, that does not mean that Bind does
it. I know that if I do a hostname that is all numbers it refers to the
in-addr.arpa file. If I give it the fqdn, then it resolves using the
> M A C
> phn at icke-reklam.ipsec.nu wrote:
> Stephane Bortzmeyer wrote:
> > On Fri, Jan 23, 2004 at 06:34:15PM +0000,
> > phn at icke-reklam.ipsec.nu
> > a message of 31 lines which said:
> >> The format of the domain name, it's illegal
> > As a domain name, it is certainly LEGAL. As an host name, it WAS
> > illegal but it is no longer.
> >> See rfc1123 for details
> > On the contrary, RFC 1123 was the one which authorized all-digits
> > names (before RFC 1123, you needed an initial letter).
> > Read it: 2.1 "Host Names and Numbers", p.13
> OK, i'll quote :
> "One aspect of host name syntax is hereby changed: the
> restriction on the first character is relaxed to allow either a
> letter or a digit. Host software MUST support this more liberal
> And a littee later :
> "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 18.104.22.168). However, a valid host name can never
> have the dotted-decimal form #.#.#.#, since at least the
> highest-level component label will be alphabetic."
> I stand corrected.
> I do however insist on the hazards involved with using all-numeric
> host-names, they will trigger software anomalies everywhere.
> Peter Håkanson
> IPSec Sverige ( At Gothenburg Riverside )
> Sorry about my e-mail address, but i'm trying to keep spam out,
> remove "icke-reklam" if you feel for mailing me. Thanx.
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