I would never, ever, ever, never connect online any qube that has template in it’s prefs/name, hahah. Actually, my default netVM is none.
Setup connection in sys-net dispVM and while it’s still on, fire up it’s dvm-template and copy correspondent .nmconnection from sys-net to
/rw/config/NM-system-connections
folder of a dvm-template. Shutdown both, and restart sys-net. That way, it’ll persist across reboots.