Forum Discussion
Leonardo_Souza
Nov 17, 2016Cirrocumulus
The GTM will do topology load balancing (geolocation) based in the source ip it receives. Unless there are some crazy requirements, the users connected from one APN are all located in the same area, so the load balance decision should be the same to all users in that area.
If this was HTTP proxy, you could add the source IP in the HTTP headers, but as this is DNS and most likely UDP, not easy to do.
Have a look in this questions/answers because is more or less the same you are asking:
https://devcentral.f5.com/questions/mac-address-field-50132
https://devcentral.f5.com/questions/udp-protocol-insert-client-source-ip-49607