title: What is one effective way for setting up DNS forwarding between GCE and AWS?
body: <p>I've set up a VPN tunnel to allow my GCE services to access some legacy resources sitting in AWS; it turns out that accessing some of these legacy resources (ie, RDS servers) requires me to be able to dynamically forward DNS. That is, if I want the connection to go over the vpn instead of the open internet.</p>
  
  <p>What is the easiest method to do this - would setting up a couple of unbound dns servers do the trick, for example? If it is the correct solution, which network would they have to sit in - the aws or gce one?</p>