I encountered something I don’t quite understand, and I was hoping someone could enlighten me.
I set up Tailscale on my router with subnets, so I could remotely access my home network. This worked great. Then, at home, I was happily browsing the internet on my main PC, and decided to dial into another machine on my network. It couldn’t access it at all. Disconnecting Tailscale on my main PC restored lconnectivity.
I don’t understand what is happening here- the only thing I can think of is that my internet traffic was being routed through Tailscale, but I don’t have an exit node.
TL,DR: home PC sees Internet but not LAN when connected to Tailscale, why and how fix?
I think you might also make your tailscale on router an exit node. I remember when I was setting things up for me I had issue like yours, but on the phone. Everything was working when I used data, but when I connected to my local wifi it didn’t see the stuff on subnet ip’s. Setting it as exit node helped. Also make sure everything is approved in your tailscale admin.