code: func (ncc *SeesawNCC) LBInterfaceDown(iface *ncctypes.LBInterface, out *int) error {
  	netIface, err := iface.Interface()
  	if err != nil {
  		return err
  	}
  	log.Infof("Bringing down LB interface %s", netIface.Name)
  	return ifaceDown(netIface)
  }
docs: // LBInterfaceDown brings the load balancing interface down.