Flex 100H DNS over VPN Tunnel

Remote site (router we setup in our office for testing)

LAN - 192.168.2.0/24, VTI IP - 10.20.30.2/30

Disregard the prior comments on models, in this round of testing we are connecting a test unit in our office (200H) to the customer's site (200).

Apologize for the confusion, we setup a new test from scratch to ensure there was not any misconfigurations with the existing equipment.

Here is this screenshot from the new Flex 200H we have setup in our office for testing where we are experiencing the same issues:

Correct, but for this new testing scenario that we setup the 200 (non H) is using 10.20.30.1/30 so it is in the same subnet as the 10.20.30.2/30 that the 200H is.

Just want to reiterate again that we are not having issues with traffic initiated from the computers traversing the VPN, only traffic initiated from the router.

Correct. Client side LAN is 10.10.1.1/24, with a DNS server at 10.10.1.10/24. Remote side LAN is 192.168.2.1/24. I have a computer at 192.168.2.33 which can ping to the server at 10.10.1.10 (and the server can ping the computer).