xdsOpts := clioptions.CentralControlPlaneOptions{
		XDSSAN:  makeSan(istioNamespace, kubeClient.Revision()),
		CertDir: centralOpts.CertDir,
		Timeout: centralOpts.Timeout,
	}
	visited := make(map[string]bool)
	queryToOnePod := func(pod *v1.Pod) (*discovery.DiscoveryResponse, error) {
		fw, err := kubeClient.NewPortForwarder(pod.Name, pod.Namespace, "localhost", 0, 15004)
		if err != nil {
			return nil, err
		}
		err = fw.Start()