--- guest run as root ---
$ ./fwe_trigger fwe0
[!] interface fwe0 not present on this host (Device not configured)
[!] fwe0 attaches only as a child of an OHCI-1394 FireWire controller (fwohci). This host exposes no such PCI device, so neither DF-4762 nor DF-4763 is runtime-testable here.
EXIT=2
--- guest run as unprivileged maxx ---
$ su -m maxx -c '/tmp/fwe_trigger fwe0'
[!] interface fwe0 not present on this host (Device not configured)
[!] fwe0 attaches only as a child of an OHCI-1394 FireWire controller (fwohci). This host exposes no such PCI device, so neither DF-4762 nor DF-4763 is runtime-testable here.
USER_EXIT=2
--- guest PCI inventory (excerpt) ---
hostb0@pci0:0:0:0  isab1  atapci0  none0(class 0x068000 ACPI)  vgapci0  virtio_pci0  virtio_pci1
-> no OHCI-1394 (class 0x0c0010) and no vendor 0x109e (Brooktree) device present