I would really really really like to have one device on my tailnet as the exitnode for all other devices on the tailnet. However, most VPNs make this really difficult. Is there any way to do this? I’ve read it’s possible with split-tunnelling, but ProtonVPN (which I use) doesn’t support that. I just installed Alpine Linux on my RPI 4b. And would like to use this as my exit node. Does anyone have any tips for how this could be done?
I’ve read some of the comments and it sounds like you’ve already tried installing proton VPN and tailscale on the same machine, but depending on your setup maybe you could make a “VPN gateway”
Like take your pi, install protonvpn, then enable IP forwarding and use a little nat IP tables script to nat your lan to your proton VPN interface like a home router would with the wan and lan ports.
Then on your tailscale gateway set the default route to be that box instead of your normal router. Then just use the tailscale node as the exit node on your client and check your IP.
In theory this would be similar to a qubes type setup which is what I tend to use for this kind of work.
This also adds the benefit that any other devices that wanna VPN can just use the gateway