Same Transaction ID queries

Naser Al Hattab hattab at
Sun Feb 5 11:54:32 UTC 2012

Hi all,

We have an observation for some queries where BIND caching server 
receives multiple queries (three or four, A or AAAA) for a domain name, 
with the same transaction ID in the DNS header in all query packets, and 
one response packet is sent back from the server only for these queries. 
The client IP,source port and Server IP is the same in these queries. Is 
this the right BIND behavior in this case or it is an issue.

Naser Al Hattab.

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