Upgraded my Ubuntu server box from 6.1.0.19. Seems to work well so far. Only thing I had to change is Wireguard Server/Policy and Peer names. I had used names with "-" but now only accepts "_".

Would be a nice feature to have.

@MR.S Thanks for your hint, VPN from IOS works again!

@J4ce I've got the same problem from IOS and OpenVPN Connect. No errors in clients log. Connect and traffic from PC or Mac works (latest OpenVPN Connect clients for those platforms). Router: ER605...