I'd like to play Minetest with a friends over the internet (not the same network). I previously used Hamachi and it worked well but I want to use an easy and open source alternative. So is there any real alternative or should I just continue to use Hamachi?
I'd really suggest something Wireguard-based like Tailscale instead of OpenVPN for latency sensitive applications like games.
The great thing about mesh vpn's like tailscale is that each device connects directly to each other. This means traffic isn't routed through a central server, which results in lower latency. If you run game server and vpn on the same host/network/router it doesn't make a difference in latency.
The installation guide for tailscale [1] requires a bit of terminal use, but it's only copy pasting of a few commands.
There's also a Decky plugin to control tailscale from gaming mode [2]. Installing and setting up both took me around 15min.
I get the following error all the time when I want to start the systemd run section of the tutorial: Failed to find executable /home/deck/.local/share/tailscale/steamos/tailscale_1.24.2_amd64/tailscaled: No such file or directory. Everything up until there went fine but the last command won't work.