rhel7: How can NPIV HBAs be handled by libvirt, so they are not addressed in "hostX" style but with identifiers which are not subject to change?

Issue

When defining a NPIV HBA the parent needs to be given as a host number for example:

# vi vhba_host3.xml
<device>
    <parent>scsi_host3</parent>
    <capability type='scsi_host'>
        <capability type='fc_host'>
        </capability>
    </capability>
</device>

In the customers case they had the the actual HBAs change over a reboot from this:

lrwxrwxrwx. 1 root root 0 Jun  7 16:12 host0 -> ../../devices/pci0000:00/0000:00:01.0/0000:03:00.0/host0/scsi_host/host0
lrwxrwxrwx. 1 root root 0 Jun  7 16:12 host1 -> ../../devices/pci0000:00/0000:00:02.0/0000:05:00.0/host1/scsi_host/host1
lrwxrwxrwx. 1 root root 0 Jun  7 16:12 host2 -> ../../devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3.1/1-3.1:1.0/host2/scsi_host/host2
lrwxrwxrwx. 1 root root 0 Jun  7 16:12 host3 -> ../../devices/pci0000:00/0000:00:03.2/0000:0b:00.0/host3/scsi_host/host3

To this:

lrwxrwxrwx. 1 root root 0 Jun  9 23:17 host0 -> ../../devices/pci0000:00/0000:00:01.0/0000:03:00.0/host0/scsi_host/host0
lrwxrwxrwx. 1 root root 0 Jun  9 23:17 host1 -> ../../devices/pci0000:00/0000:00:02.0/0000:05:00.0/host1/scsi_host/host1
lrwxrwxrwx. 1 root root 0 Jun  9 23:17 host2 -> ../../devices/pci0000:00/0000:00:03.2/0000:0b:00.0/host2/scsi_host/host2
lrwxrwxrwx. 1 root root 0 Jun  9 23:17 host3 -> ../../devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3.1/1-3.1:1.0/host3/scsi_host/host3

The NPIV HBAs changed from:

lrwxrwxrwx. 1 root root 0 Jun 9 23:04 host6 -> ../../devices/pci0000:00/0000:00:03.2/0000:0b:00.0/host3/vport-3:0-0/host6/scsi_host/host6
lrwxrwxrwx. 1 root root 0 Jun 9 23:04 host7 -> ../../devices/pci0000:00/0000:00:03.2/0000:0b:00.0/host3/vport-3:0-1/host7/scsi_host/host7

To:

lrwxrwxrwx. 1 root root 0 Jun 9 23:18 host6 -> ../../devices/pci0000:00/0000:00:02.0/0000:05:00.0/host1/vport-1:0-2/host6/scsi_host/host6
lrwxrwxrwx. 1 root root 0 Jun 9 23:18 host7 -> ../../devices/pci0000:00/0000:00:02.0/0000:05:00.0/host1/vport-1:0-3/host7/scsi_host/host7

Could instead of "hostX" an identifier be used that does not change?