GTM split zone DNS responses - iRule

So the solution article is misleading/incomplete in my opinion...

If you want to use topology at wide IP level to serve internal clients and external clients different IPs for the same WIP - what you need to do is create the RFC_1918 list or list of your internal LDNS and then create a record for each POOL that you are using:

1. Region is Internal_LDNS | Pool is internal-www.example.com-pool
2. Region is not Internal_LDNS | Pool is external-www.example.com-pool

So each WIP has 2 pools - 1 internal and 1 external - and uses topology, and the pools then use global availability or whatever.

This is if there is no address translation - I haven't tried with address translation - perhaps the article's solution only works if you are using address translation....