iRule to resolve DNS for GTM (wide-ip if possible)
Hi I've server on cloud and want to try to use irule to resolve dynamic IP from cloud and return IP to user. I saw irule LTM can use RESOLVE:lookup and we can use it on Listener. But Is it possible to have the same function irule in wide-ip ? because if we attach irule on Listener, it will surely take more performance than wide-ip. Flow is When user send dns request for wide-ip "A" -> F5 resolve dynamic IP from cloud (it's hostname will be like ABCDEFG.cloud-us.com)-> F5 return IP to user. ps. due to some circumstance CNAME is not possible. Thank you