If you have any use for a private VPN, this is THE ticket. Dual-stack, secure, extremely easy on resources, extremely short code, and no discernible drop in network bandwidth when connected. Authentication is public-private key. Two way roaming (server and client) is also built in (particularly helpful with mobile devices). My server configuration file is 11 lines long. It is configured for two clients (3 lines per client) and internet access for the clients (2 lines: 'PostUp...' and 'PostDown...'). My home WG server is running very smoothly on a Raspberry Pi 3B+. Wireguard is available for Linux, Windows, Mac, iOS and Android. Anyone else using it?