GTM Topology Architecture with DNS resolvers

Ahhh I'm sorry about that, I missed you're coming from the same LDNS.. Pointing directly at the GTM will work for subnet 2, like you mentioned, but it's not where you want to end up redundancy wise..

 

 

Not sure what a good option is here.. As you mentioned, you're stuck with the LDNS source.. As of today.. I don't believe the original source is passed along.. but I do remember reading some people from google were trying to push it.. Anybody know where that is at?

 

 

http://tools.ietf.org/id/draft-vandergaast-edns-client-ip-01.html

 

 

 

I'm not sure what your flow is after the GTM...? Are they all in different data centers? or same? You could always do something at the LTMs by IP..and redirect from there.. but not a good long term solution either..