ftp://ftp.isi.edu/in-notes/rfc2181.txt 10.1. CNAME resource records The DNS CNAME ("canonical name") record exists to provide the canonical name associated with an alias name. There may be only one such canonical name for any one alias. That name should generally be a name that exists elsewhere in the DNS, though there are some rare applications for aliases with the accompanying canonical name undefined in the DNS. An alias name (label of a CNAME record) may, if DNSSEC is in use, have SIG, NXT, and KEY RRs, but may have no other data. That is, for any label in the DNS (any domain name) exactly one of the following is true: + one CNAME record exists, optionally accompanied by SIG, NXT, and KEY RRs, + one or more records exist, none being CNAME records, + the name exists, but has no associated RRs of any type, + the name does not exist at all. Stephen Studded wrote:
RFC 2181 section 10.1.
Sorry I wasn't clear. I meant that you should actually quote the material you want to refer to. I can't find any RFC 2181 either at ftp://rs.internic.net/rfc/ or ftp://ftp.ietf.org/. If you would be so kind as to quote exactly what you are referring to and provide a URL so that I can check out the context I'd appreciate it.
-- Stephen Sprunk, KD5DWP "Oops." Email: sprunk@paranet.com CCIE #3723 -Albert Einstein ICBM: 33.00151N 96.82326W