code: def send_vdp_port_event(self, port_uuid, mac, net_uuid,
                              segmentation_id, status, oui):
          
          try:
              with self.ovs_vdp_lock:
                  ret = self.send_vdp_port_event_internal(port_uuid, mac,
                                                          net_uuid,
                                                          segmentation_id,
                                                          status, oui)
                  return ret
          except Exception as e:
              LOG.error("Exception in send_vdp_port_event %s" % str(e))
              return {'result': False, 'fail_reason': str(e)}
docs: Send vNIC UP/Down event to VDP.
  
          :param port: a ovslib.VifPort object.
          :param net_uuid: the net_uuid this port is to be associated with.
          :param segmentation_id: the VID for 'vlan' or tunnel ID for 'tunnel'
          :param status: Type of port event. 'up' or 'down'