missing required virtualport type on RHEL

If you define vm with virtualinterfaces, that don't have virtualport, then cloning of such vms will fail with below error

*** libvirtError: XML error: missing required virtualport type

Eg xml for the vm, where you'd see the failure while cloning

38     type='bridge'>

39       address='52:54:00:8c:30:e1'/>

40       bridge='br0'/>

41       type='virtio'/>

42       

type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>

43     

44     type='bridge'>

45       address='52:54:00:e6:70:f8'/>

46       bridge='nsx-managed'/>

47       type='openvswitch'>

48         interfaceid='df55d7eb-5f25-43db-8bf8-f67b259bf51b'/>

49       

50       type='virtio'/>

51       

type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>

52     

A bad work-around is to comment out the line which does this validation

/usr/share/virt-manager/virtinst/cloner.py

     def start_duplicate(self, meter=None):

         """

         Actually perform the duplication: cloning disks if needed and defining

         the new clone xml.

         """

         logging.debug("Starting duplicate.")

         meter = util.ensure_meter(meter)

         dom = None

         try:

             # Replace orig VM if required

             Guest.check_vm_collision(self.conn, self.clone_name,

                                      do_remove=self.replace)

             # Define domain early to catch any xml errors before duping storage

             # The below statement was commented out for systest. While cloning a VM

             # with no virtual port defined, it will error out

             #dom = self.conn.defineXML(self.clone_xml)

             dom = None

             if self.preserve:

                 for dst_dev in self.clone_disks:

                     dst_dev.setup(meter=meter)

                 if self._nvram_disk:

                     self._nvram_disk.setup(meter=meter)

         except Exception as e:

             logging.debug("Duplicate failed: %s", str(e))

             if dom:

                 dom.undefine()

             raise