code: def update_fw_local_router(self, net_id, subnet_id, router_id, os_result):
          
          fw_dict = self.get_fw_dict()
          fw_dict.update({'router_id': router_id, 'router_net_id': net_id,
                          'router_subnet_id': subnet_id})
          self.store_dummy_router_net(net_id, subnet_id, router_id)
          self.update_fw_local_result(os_result=os_result)
docs: Update the FW with router attributes.