curious CNAME answer?
MontyRee
chulmin2 at hotmail.com
Thu Feb 4 15:58:09 UTC 2010
Hello, all.
I have some curious question.
below is a part of zone file at master dns(example.com).
www IN CNAME www.down
down IN NS ns3.example.com.
wehn I dig query like below at server,
$ dig @dns.example.com www.example.com
the result is different..
if query from slave dns server,
192.168.2.1.domain> xx.xx.xx.xx.30869: 45064* 2/2/2 CNAME[|domain]
and the answer is
www.example.com. 3600 IN CNAME www.down.example.com.
www.down.example.com. 27 IN A 10.10.1.3
if query from any other server,
192.168.2.1.domain> xx.xx.xx.xx.47127: 58823*- 1/2/2 CNAME[|domain]
and the answer is
www.example.com. 3600 IN CNAME www.down.example.com.
my question is,
Why the result is different by client?
why first case answers A record also but the second case is cname only?
Thanks in advance.
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