WireGuard is a ‘stateless’ protocol. It stops the VPN tunnel if there’s no traffic & sends again when there is.(1) OpenVPN is… well… let’s just say there’s a reason everyone, inc. the big VPN providers, are switching to WireGuard as the default.

A GL device with a WireGuard Client set up (eg: Slate AX as a VPN Client/WG to Mullvad) will re-engage when rebooted. I don’t worry about it when I reboot/repower my Flint.

  1. Section ’ Simple Network Interface’, wireguard.com