code: func toRealServer(dst *libipvs.Destination) (*RealServer, error) {
  	if dst == nil {
  		return nil, errors.New("ipvs destination should not be empty")
  	}
  	return &RealServer{
  		Address:      dst.Address,
  		Port:         dst.Port,
  		Weight:       dst.Weight,
  		ActiveConn:   dst.ActiveConnections,
  		InactiveConn: dst.InactiveConnections,
  	}, nil
  }
docs: // toRealServer converts an IPVS Destination to the equivalent RealServer structure.