local-dns-docker/README.md

local-dns-docker

https://www.reddit.com/r/Tailscale/comments/1dql8a6/use_the_same_domain_name_on_home_network_and_on/

What everybody has already said, but also use the tailnet IP of your DNS server as a global nameserver. I'll post my working steps:

• Create a subnet router on your DNS host.

1. On the DNS host you need to set --accept-dns=false
2. advertise routes
3. https://tailscale.com/kb/1019/subnets sudo tailscale up --accept-dns=false --advertise-routes=192.168.x.x/x

• In tailscale Machines edit new host and allow new route(s)
• In tailscale DNS, create a global namerserver:

1. set it to the tailnet IP of your DNS server
2. you can set split DNS here or you can just use your DNS for everything
3. if u have android clients, check the slider to ignore local DNS

• (optional) do the Linux enhancements mentioned on https://tailscale.com/kb/1019/subnets

https://tailscale.com/kb/1019/subnets?tab=linux#connect-to-tailscale-as-a-subnet-router

There is also a procedure to initially register the device with Tailscale server before this whole thing can work. Maybe I will document later. Not necessary as long as using the credentials in /DATA/AppData/tailscale/ so don't delete them.