code: def process_bulk_vm_event(self, msg, phy_uplink):
          
          LOG.info("In processing Bulk VM Event status %s", msg)
          time.sleep(3)
          if (not self.uplink_det_compl or
                  phy_uplink not in self.ovs_vdp_obj_dict):
              # This condition shouldn't be hit as only when uplink is obtained,
              # save_uplink is called and that in turns calls this process_bulk.
              LOG.error("Uplink Port Event not received,"
                        "yet in bulk process")
              return
          ovs_vdp_obj = self.ovs_vdp_obj_dict[phy_uplink]
          for vm_dict in msg.msg_dict.get('vm_bulk_list'):
              if vm_dict['status'] == 'down':
                  ovs_vdp_obj.pop_local_cache(vm_dict['port_uuid'],
                                              vm_dict['vm_mac'],
                                              vm_dict['net_uuid'],
                                              vm_dict['local_vlan'],
                                              vm_dict['vdp_vlan'],
                                              vm_dict['segmentation_id'])
              vm_msg = VdpQueMsg(constants.VM_MSG_TYPE,
                                 port_uuid=vm_dict['port_uuid'],
                                 vm_mac=vm_dict['vm_mac'],
                                 net_uuid=vm_dict['net_uuid'],
                                 segmentation_id=vm_dict['segmentation_id'],
                                 status=vm_dict['status'],
                                 oui=vm_dict['oui'],
                                 phy_uplink=phy_uplink)
              self.process_vm_event(vm_msg, phy_uplink)
docs: Process the VM bulk event usually after a restart.