You can disable qubes autostart to boot in dom0:
And then in dom0 you can open sys-net Settings → Devices tab and remove the Ethernet controller from the list of PCI devices attached to this qube.
You can disable qubes autostart to boot in dom0:
And then in dom0 you can open sys-net Settings → Devices tab and remove the Ethernet controller from the list of PCI devices attached to this qube.