[dns-operations] Why the record locates in com. zone?

[刘明星：）]

hi, all

I dig zq681.com @a.gtld-servers.net
the result is the following:
;; QUESTION SECTION:
;zq681.com.   IN A

;; AUTHORITY SECTION:
zq681.com.  172800 IN NS ns3.wondns.com.
zq681.com.  172800 IN NS ns4.wondns.com.

;; ADDITIONAL SECTION:
ns3.wondns.com.  172800 IN A 113.105.171.124
ns3.wondns.com.  172800 IN A 208.98.33.250
ns3.wondns.com.  172800 IN A 208.98.33.251
ns4.wondns.com.  172800 IN A 113.105.171.78
ns4.wondns.com.  172800 IN A 208.98.33.252
ns4.wondns.com.  172800 IN A 208.98.33.253

and I find that the bind9.7.2-p2 recursor just believe that the authoritave nameserver have the addresses listing in additional section in response, and thus 
directly request zq681.com to one of the address. I want to know whether it is wrong for the recursor to accept the addresses. If it is allowed, why is there the records like  "ns3.wondns.com.  172800 IN A 113.105.171.124" in com. zone and how to do this? 


2011-09-09 



Mingxing 
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