I believe Steam/Valve offers their SteamNet for third parties, which is basically a non-IP VPN centered around low-latency. As an additional advantage, the netw

I believe Steam/Valve offers their SteamNet for third parties, which is basically a non-IP VPN centered around low-latency. As an additional advantage, the network itself only allows you to talk to a game server when authorized, so attacking game servers is way harder, since the game server (software) itself doesn't have internet connectivity any more and is only reachable through that VPN.