I am trying to do the exact same thing but have a related problem.
For simplicity sake, let's say I have two machines in my app group
VM-DC with AD, DNS, and DHCP roles
VM-Web with IIS
Both have control panel > internet options > connections > proxy set up to point to the Veeam gateway on port 8080
I can browse vm-web by fqdn just fine. I can browse google.com by IP. I cannot browse google.com by fqdn.
If I do a nslookup and query google.com vm-dc cannot find google.com.
If I do an nslookup, change server to 188.8.131.52 and then query google.com, it fails communication with 184.108.40.206
How do I browse google.com from within the Veeam lab?