can't see nameserver externally

[Chris Thompson]

On Dec 9 2008, Davenport, Steve M wrote:

>I noticed that one of our nameservers is no longer responding with the
>correct address externally. The server is  ns-2.hosp.utmck.edu and is
>listed as a server in the registration record for utmck.edu. The address
>should be 165.6.6.27 but a dig/nslookup from an external site returns
>165.6.144.1. We do not have 165.6.144.1 in any of the zone files, but
>this address is the external address of a broadband service manager in
>our network. Using dig/nslookup on the local network verifies that
>165.6.144.1 is not in the zone files or cache of our nameservers. The
>name and address of our ns-2 resolve correctly internally. Can someone
>please tell me how to identify and correct this problem.

It's probably coming from the glue at the GTLD nameservers:

$ dig +norec +nostats +nocmd anything.utmck.edu @a.gtld-servers.net
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 346
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 2, ADDITIONAL: 2

;; QUESTION SECTION:
;anything.utmck.edu.            IN      A

;; AUTHORITY SECTION:
utmck.edu.              172800  IN      NS      harley.mc.utmck.edu.
utmck.edu.              172800  IN      NS      ns-2.hosp.utmck.edu.

;; ADDITIONAL SECTION:
harley.mc.utmck.edu.    172800  IN      A       165.6.131.32
ns-2.hosp.utmck.edu.    172800  IN      A       165.6.144.1
                                               ^^^^^^^^^^^^^

Try fixing your registration there.

-- 
Chris Thompson
Email: cet1 at cam.ac.uk