Re: Strange behavior from resolvers?

[Mats Dufberg <dufberg@nic-se.se>]

On Tue, 3 Apr 2001, Peter Koch wrote:

>
> > dig @ns1.obol-net.net ns1.obol-net.net mx
> >
> > with
> >
> > dig ns1.obol-net.net mx
>
> The NOERROR NODATA response from ns1.obol-net.net is accompanied by two NS RRs
> in the authority section. From a rough scan of the debug output I think that
> at least my nameserver/resolver running BIND 8.2.3 feels sent into an endless
> loop by these references and thus generates the "SERVFAIL". Maybe it is more
> appropriate to discuss this on a BIND related list.

The ns1.obol-net.net is certainly not running bind, so the question
remains which nameserver is doing wrong. As far as I can see, bind would
return SOA in auhority section for an equevalent request.



; <<>> DiG 2.2 <<>> @dns.nic-se.se dns.nic-se.se mx
; (1 server found)
;; res options: init recurs defnam dnsrch
;; got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 10
;; flags: qr aa rd ra; Ques: 1, Ans: 0, Auth: 1, Addit: 0
;; QUESTIONS:
;;      dns.nic-se.se, type = MX, class = IN

;; AUTHORITY RECORDS:
nic-se.se.      3600    SOA     dns.nic-se.se. host\.master.nic-se.se. (



; <<>> DiG 2.2 <<>> @ns1.obol-net.net ns1.obol-net.net mx
; (1 server found)
;; res options: init recurs defnam dnsrch
;; got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 10
;; flags: qr aa rd ra; Ques: 1, Ans: 0, Auth: 2, Addit: 2
;; QUESTIONS:
;;      ns1.obol-net.net, type = MX, class = IN

;; AUTHORITY RECORDS:
obol-net.net.   86400   NS      ns2.obol-net.net.
obol-net.net.   86400   NS      ns1.obol-net.net.




Mats

-----------------------------------------------------------------
Mats Dufberg                                     +46-8-545 857 06
dufberg@nic-se.se                           fax: +46-8-545 857 29