Adress lookup for authoritative server fails

[Jan Wätzig]

Hi,

i've got a strange problem. There are some domain names that my bind cannot
resolve. For example, wenn i run "host www.minolta-qms.de", my server does
the following (tcpdump output):

16:16:52.742371 zeus2.ba-dresden.de.filenet-tms > e.nic.de.domain: 45759 A? 
ns1.catsys.de. (31) (DF)
16:16:52.742371 zeus2.ba-dresden.de.filenet-tms > e.nic.de.domain: 64608 A? 
ns2.catsys.de. (31) (DF)
16:16:52.742371 zeus2.ba-dresden.de.filenet-tms > e.nic.de.domain: 34949 A? 
minolta-qms.de. (32) (DF)
16:16:52.772371 e.nic.de.domain > zeus2.ba-dresden.de.filenet-tms: 45759- 
0/3/0 (99) (DF)
16:16:52.772371 e.nic.de.domain > zeus2.ba-dresden.de.filenet-tms: 64608- 
0/3/0 (99) (DF)
16:16:52.772371 e.nic.de.domain > zeus2.ba-dresden.de.filenet-tms: 34949- 
0/2/0 (75) (DF)
16:16:52.772371 zeus2.ba-dresden.de.filenet-tms > e.nic.de.domain: 53566 A? 
ns1.catsys.de. (31) (DF)
16:16:52.772371 zeus2.ba-dresden.de.filenet-tms > e.nic.de.domain: 63707 A? 
ns2.catsys.de. (31) (DF)
16:16:52.802371 e.nic.de.domain > zeus2.ba-dresden.de.filenet-tms: 53566- 
0/3/0 (99) (DF)
16:16:52.802371 e.nic.de.domain > zeus2.ba-dresden.de.filenet-tms: 63707- 
0/3/0 (99) (DF)
16:16:57.742371 zeus2.ba-dresden.de.filenet-tms > e.nic.de.domain: 11212 A? 
ns1.catsys.de. (31) (DF)
16:16:57.742371 zeus2.ba-dresden.de.filenet-tms > e.nic.de.domain: 60884 A? 
ns2.catsys.de. (31) (DF)
16:16:57.742371 zeus2.ba-dresden.de.filenet-tms > e.nic.de.domain: 57996 A? 
minolta-qms.de. (32) (DF)
16:16:57.762371 e.nic.de.domain > zeus2.ba-dresden.de.filenet-tms: 11212- 
0/3/0 (99) (DF)
16:16:57.772371 e.nic.de.domain > zeus2.ba-dresden.de.filenet-tms: 60884- 
0/3/0 (99) (DF)
16:16:57.772371 e.nic.de.domain > zeus2.ba-dresden.de.filenet-tms: 57996- 
0/2/0 (75) (DF)
16:16:57.772371 zeus2.ba-dresden.de.filenet-tms > e.nic.de.domain: 54094 A? 
ns1.catsys.de. (31) (DF)
16:16:57.772371 zeus2.ba-dresden.de.filenet-tms > e.nic.de.domain: 27530 A? 
ns2.catsys.de. (31) (DF)
16:16:57.802371 e.nic.de.domain > zeus2.ba-dresden.de.filenet-tms: 54094- 
0/3/0 (99) (DF)
16:16:57.802371 e.nic.de.domain > zeus2.ba-dresden.de.filenet-tms: 27530- 
0/3/0 (99) (DF)

The server gets two authoritative servers for minolta-qms.de: ns1 and 
ns2.catsys.de.
while querying the ip adresses of these it gets 3 authoritative servernames 
for the
zone catsys.de, but it doesn't query the adresses of these. The result is 
that i get
a "non-existent domain" message.

But when i first do e.g. "host ns1.catsys.de" before runnning "host 
www.minolta-qms.de"
the resulution works. This behaviour does not only occur with this name, 
but with
every name whose resolution gives me some authoritative servers in the 
first step
and some authoritative servers, when bind tries to get the adresses of of 
the first
authoritative servers.

I think there is an error in the configuration, but i don't know what 
exactly the error is.

thx, jan
-- 
Jan Wätzig
Laboringenieur
Berufsakademie Dresden