why dig +short for NS doesn't get the result

Torinthiel torinthiel at data.pl
Tue Mar 1 05:58:20 UTC 2011


On 03/01/11 04:55, terry wrote:
> server1:/var/cache/bind# dig ox.test.nsbeta.info ns @localhost +short
> 
> # got nothing here
> 
> 
> server1:/var/cache/bind# dig ox.test.nsbeta.info ns @localhost
> 
> ; <<>> DiG 9.6-ESV-R3 <<>> ox.test.nsbeta.info ns @localhost
> ;; global options: +cmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 53460
> ;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
> ;; WARNING: recursion requested but not available
> 
> ;; QUESTION SECTION:
> ;ox.test.nsbeta.info.           IN      NS
> 
> ;; AUTHORITY SECTION:
> ox.test.nsbeta.info.    20222   IN      NS      dwdns1.nsbeta.info.

Look where the answer is

> 
> ;; Query time: 0 msec
> ;; SERVER: 127.0.0.1#53(127.0.0.1)
> ;; WHEN: Tue Mar  1 11:51:21 2011
> ;; MSG SIZE  rcvd: 58
> 
> 
> I have setup the NS for ox.test.nsbeta.info zone, why dig +short gets
> nothing but dig does get the result?

+short instructs dig to only write extract of ANSWER section. your reply
is in authorative section.
Torinthiel

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