Ralf G. R. Bergs wrote: > can anyone interpret the following named message for me? I don't quite get what > it's trying to tell me... > > Jul 20 15:44:06 Server named[139]: sysquery: query(jeondrs.jeonju.ac.kr) NS > points to CNAME (ns.kren.ne.kr:) learnt (CNAME=<my-forwarder>:NS= > 203.248.240.141) > > I'm running two in-house nameservers that are authoritative for my virtual in- > house domain and otherwise just act as caching name daemons. > > I know what NS and CNAME RR are, I just don't understand the meaning of the > above message. "NS points to CNAME" is an error message. It means that querying the RHS of an NS record returns a CNAME record, which is an error. If an RR has a domain as its RHS (i.e. NS, MX, CNAME RRs), that domain should resolve to one or more A records, but never to a CNAME. Basically, a CNAME should only result from the top-most level of resolution (e.g. when gethostbyname() is passed a domain which resolves to a CNAME), never from recursion (where the nameserver queries a domain returned from a previous query). -- Glynn Clements <glynn.clements@virgin.net> - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org
