Public DNS resolvers when using an exit node

SUPPORT QUESTIONS
1

Tailscale version: Not applicable, but most of my devices are on 1.17.x now.
Your operating system & version: Not applicable.

I use pihole (Raspberry Pi) as my DNS resolvers on Tailscale at the moment, but I am wondering if there is a way to set public DNS resolvers (like Cloudflare, Google, Quad9) when using exit nodes. Would restrict to search domain help in any way?

2

You mean, switch to using public DNS resolvers when using an exit node and use the pi-hole when not using the exit node? There isn’t a function to dynamically change DNS servers built into Tailscale, no.

A common situation is to install Tailscale on the Pi-hole. Even while using an exit node, Tailscale IP addresses are reachable. So the Tailscale IP of the Pi-hole can be used in all cases. Access a Pi-hole or Raspberry Pi from anywhere · Tailscale

3

Thanks @DGentry. That’s precisely my setup today. Would dynamic switching of DNS be coming in the future?

As some additional context, when I use an exit node in another country (say Canada, I am from India), I am hoping to use a DNS resolver close to that node instead of using my pihole at home. It’s not a pressing concern, I am just curious.