DNS Problem: Help!

[Danny Mayer]

At 02:28 PM 11/16/02, Mike Diggins wrote:


>We're having an odd problem with one ISP whose customers make use of our
>University network resources.

If they are making illegal use of your network resources you should have
your lawyers send them a cease and desist letter. If they continue
you should be able to sue in the Canadian courts.

>  The problem is that our name servers are
>finding incorrect Authoritative name servers for the IP address in
>question (actually a range of addresses beginning at 24.57.128.0 - not
>their entire address space, just part of it). The IP address for their
>name server NS.CGOCABLE.NET comes back as 24.226.1.11 which is wrong, it's
>not even a name server. It should be 24.226.1.94! If I restart named it
>sometimes picks up the correct address. I just restarted both my name
>servers and find that they have, once again, an incorrect address.
>
>I have no affiliation with this ISP, they won't return any of my calls and
>they don't seem to be aware of a problem! Is there anyway this could be a
>problem at our end? Is there anyway to find out who gave our name server
>the incorrect data? Is there anyway to force our name servers to lookup
>this information again without restarting named? Any help would be
>appreciated.

Specify their servers.


>diggins at myserver<local/named># nslookup
>Default Server:  localhost
>Address:  127.0.0.1
>
> > set norecursive
> > 24.57.131.72
>Server:  localhost
>Address:  127.0.0.1
>
>Authoritative answers can be found from:
>131.57.24.in-addr.arpa  nameserver = NS.CGOCABLE.NET
>131.57.24.in-addr.arpa  nameserver = NS1.CGOCABLE.NET
>NS.CGOCABLE.NET internet address = 24.226.1.11
>NS1.CGOCABLE.NET        internet address = 24.226.1.20
>*** No address (A) records available for 24.57.131.72

Stop using nslookup for this and use dig.
I had no problem. It looks right to me:
H:\bind930bin>dig 131.57.24.in-addr.arpa any

; <<>> DiG 9.3.0a0 <<>> 131.57.24.in-addr.arpa any
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 41
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 2, ADDITIONAL: 2

;; QUESTION SECTION:
;131.57.24.in-addr.arpa.                IN      ANY

;; ANSWER SECTION:
131.57.24.in-addr.arpa. 16092   IN      NS      NS1.CGOCABLE.NET.
131.57.24.in-addr.arpa. 16092   IN      NS      NS.CGOCABLE.NET.

;; AUTHORITY SECTION:
131.57.24.in-addr.arpa. 16092   IN      NS      NS1.CGOCABLE.NET.
131.57.24.in-addr.arpa. 16092   IN      NS      NS.CGOCABLE.NET.

;; ADDITIONAL SECTION:
NS.CGOCABLE.NET.        85554   IN      A       24.226.1.94
NS1.CGOCABLE.NET.       85957   IN      A       24.226.1.20

;; Query time: 720 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Mon Nov 18 00:45:51 2002
;; MSG SIZE  rcvd: 147

What version of BIND are you using?

Danny