The latest Pritunl and Pritunl Link builds on the unstable repositories now include WireGuard support for Pritunl Link. This can be enabled by updating the server and all the link clients to the latest unstable releases. Then installing wireguard-tools
on all link clients. Once all the links are ready change the Protocol in the link settings to WireGuard. A port for the WireGuard connection can be manually selected or one will be randomly configured.