I am running into an issue trying to use Tailscale custom exit node feature on my GL-MT3000. I have two MT3000 units. Unit A is set up as a Tailscale exit node at Location A, and Unit B is a traveling router set up as Tailscale connected to the custom exit node (Unit A).
I have used the Unit A as a Tailscale exit node with other devices (phone, PC) extensively without issue. However, I cannot get Unit B to work when connected to Unit A as the custom exit node. Whenever I apply the custom exit node, the Internet stops working for all devices connected to Unit B. From my initial observation, it may be a DNS issue, because I can ping all IP addresses after connecting to custom exit node but cannot resolve hostnames. However, I am not sure what the exact issues are or how to troubleshoot why hostnames are not resolving correctly.
Any advise on how to troubleshoot this?