user@debian:/etc/NetworkManager/system-connections$ sudo nmcli con up "ethernet"Error: Connection activation failed: No suitable device found for this connection (device lo not available because device is strictly unmanaged).

user@debian:/etc/NetworkManager/system-connections$ nmcli connection show NAME UUID TYPE DEVICE virbr2 65720b13-9c85-455c-b3fd-8243fd5fe668 bridge virbr2 virbr3 c54ee053-3d5d-4868-a662-2c3b92c2d4e5 bridge virbr3 ethernet 58e496d7-60f3-4acd-8966-49c69d3573ce ethernet –