Forum Discussion
It could be a number of things, so first some questions.
Do the clients query the GTM directly as their DNS server, or are they using some intermediate DNS server? If they use an intermediate server, this DNS server is receiving a response from the GTM and caching it, and giving the same answer to all of the clients using it.
What is the Persist CIDR set to in the GTM Pool? The setting here will determine the size of the persist record. For instance 32 will keep track of persistence for every unique address, but 24 would give the same answer to systeming in the same /24 network(assuming ipv4)
Do the clients all have unique IP addresses, or is something NAT'ing them on their way? Obviously if they all share the same source IP, then they all look the same to the GTM.