Use alternative resolver for FQDN lookup

Hi,

I am wondering if I can use an alternative resolver (a different one that is configured for the system) for FQDN lookup on a single pool.

We will use split DNS to steer traffic to the F5 LTM from the internal network, however the actual service is hosted in the cloud and we would need the F5 to lookup FQDN in the pool.

This is a temporary measure until other systems are replaced - maybe 6 months.

If we were doing it in nginx it would look something like:

location / {
    resolver 8.8.8.8;
    proxy_pass http://$http_host$uri$is_args$args;
}

The F5 system resolver is configured to use internal resolvers as we need to be able to resolve hosts that are not advertised outside our network.

Cheers,

Brian