GTM/DNS and LTM - iQuery via Mgmt Ort Self-ip

You can technically use the Management interface and found useful to run

gtm_add

targetting the management interface as SSH is required, and often blocked on production networks, to perform certificate swap and form the trust between BIG-IP devices.

You can also add multiple IP addresses into a

Server

configured on the F5 DNS/GTM and an iQuery connection will attempt to be established to all IP addresses from each F5 DNS/GTM device. Only one iQuery connection between each device is actually required but I would avoid having failing iQuery connections if you can help it.