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![](https://lemmy.world/pictrs/image/8286e071-7449-4413-a084-1eb5242e2cf4.png)
Have you tried zerotier? Another option is to get a vps with unlimited bandwith and setup ovpn server on it. Then you need a router that can connect as a client to vpn. This way you will have a public ip and you dont need to mess with tunnel services. A vps with public ip is about 10 bucks a month.
OpenTTD