What problem do you have with it? What ISP or VPN?
Administering it 🤢
Clearnet IPv6 is a whole lot simpler than IP4 IMO. Right off the bat, there is no NAT nonsense. The only annoyance I've had is that too many devices (like network enabled printers) only support /64 subnets. The IPv6 mesh is even simpler. The only thing you might configure are some remote peers (LAN peers are automatic).