Same source port queries dropped by ServerIron load balancer

[Abdulla Bushlaibi]

We are facing query drops by using dnsperf tool from ISC testing the DNS 
service via load balancer. Multiple queries from the same source port 
are being dropped partially by the load balancer and as per the load 
balancer vendor feed back, this is a security feature and this situation 
doesn't happen in real life scenarios.

Most of the cases, clients are generating unique random source ports for 
each DNS query, however we are not sure about the option of reusing the 
same source port for multiple queries and how does it apply in real life 
scenarios.

Appreciate your comment on this subject.

-- 
Abdulla Ahmad Bushlaibi