code: def update_fw_local_cache(self, net, direc, start):
          
          fw_dict = self.get_fw_dict()
          if direc == 'in':
              fw_dict.update({'in_network_id': net, 'in_service_ip': start})
          else:
              fw_dict.update({'out_network_id': net, 'out_service_ip': start})
          self.update_fw_dict(fw_dict)
docs: Update the fw dict with Net ID and service IP.