Description of problem

When I create the POD with network interface passthrough to guest, it fails:

time="2019-05-18T16:52:11.569715264+08:00" level=error msg="failed to hotplug VFIO device" ID=396f4418692cb203212f3c1ef479f14e2a1911b946676dfcae168da4de749a85 error="QMP command failed: vfio error: 0000:5c:00.0: device is already attached" sandbox=396f4418692cb203212f3c1ef479f14e2a1911b946676dfcae168da4de749a85 source=virtcontainers subsystem=sandbox vfio-device-BDF="5c:00.0" vfio-device-ID=vfio-f20ea15af640067e0

time="2019-05-18T16:52:11.569748867+08:00" level=error msg="Failed to add device" ID=396f4418692cb203212f3c1ef479f14e2a1911b946676dfcae168da4de749a85 error="QMP command failed: vfio error: 0000:5c:00.0: device is already attached" source=virtcontainers subsystem=device

The pci device 5c:00.0 has already pass to guest through qemu, the qemu command as follow

-device vfio-pci,host=0000:5c:00.0

Maybe the vfio in container devices don't need hotplug when start privileged kata container?

Expected result

Actual result

(replace this text with the output of the kata-collect-data.sh script, after
you have reviewed its content to ensure it does not contain any private
information).