There is one more and that is unreliable or filtered connections. Having wireguard style VPN on a network that is unreliable can keep connections alive that mi

There is one more and that is unreliable or filtered connections. Having wireguard style VPN on a network that is unreliable can keep connections alive that might otherwise be killed. This usually isn't due to any error correction, just bypassing the stateful nat deciding your connection is not valid anymore.