Currently the library part supports Windows, and it can be used from C# or C++, if you want to use something like https://docs.microsoft.com/en-us/uwp/api/Windows.Networking....

However there is no native support for tunnel interfaces in Windows, and we are still thinking about the best way to add full support.

The WireGuard project for example developed a whole new driver just for that. Don't know if we are going to follow that route.