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Tailscale
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README.md

Subnet and Exit Nodes

Server:

# First time
$ echo 'net.ipv4.ip_forward = 1' | sudo tee -a /etc/sysctl.d/99-tailscale.conf
$ echo 'net.ipv6.conf.all.forwarding = 1' | sudo tee -a /etc/sysctl.d/99-tailscale.conf
$ sudo sysctl -p /etc/sysctl.d/99-tailscale.conf
$ cat /etc/hostname
awesome-machine
$ sudo tailscale up \
  --advertise-routes=192.168.1.0/24 \
  --advertise-exit-node

Client:

$ sudo tailscale up \
  --accept-routes \
  --exit-node=awesome-machine \
  --exit-node-allow-lan-access
$ ip route del 192.168.2.0/24 dev tailscale0 table 52

Make sure to enable subnet routing and exit nodes: https://login.tailscale.com/admin/machines

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