LabelNamespaceNodeRestriction = "node-restriction.kubernetes.io"

	// IsHeadlessService is added by Controller to an Endpoint denoting if its parent
	// Service is Headless. The existence of this label can be used further by other
	// controllers and kube-proxy to check if the Endpoint objects should be replicated when
	// using Headless Services
	IsHeadlessService = "service.kubernetes.io/headless"

		ObjectMeta: metav1.ObjectMeta{
			Name:            "foo",
			Namespace:       ns,
			ResourceVersion: "1",
			Labels: map[string]string{
				v1.IsHeadlessService: "",
			},
		},
		Subsets: []v1.EndpointSubset{{
			Addresses: []v1.EndpointAddress{{IP: "1.2.3.4", NodeName: &emptyNodeName, TargetRef: &v1.ObjectReference{Kind: "Pod", Name: "pod0", Namespace: ns}}},

	// But first check if it has that label to avoid expensive copies.
	compareLabels := currentEndpoints.Labels
	if _, ok := currentEndpoints.Labels[v1.IsHeadlessService]; ok {
		compareLabels = utillabels.CloneAndRemoveLabel(currentEndpoints.Labels, v1.IsHeadlessService)
	}
	// When comparing the subsets, we ignore the difference in ResourceVersion of Pod to avoid unnecessary Endpoints

			}
		}
		if isHeadlessService(service) {
			allErrs = append(allErrs, field.Invalid(specPath.Child("clusterIPs").Index(0), service.Spec.ClusterIPs[0], "may not be set to 'None' for LoadBalancer services"))
		}
	case core.ServiceTypeNodePort:
		if isHeadlessService(service) {

	noProxyName, err := labels.NewRequirement(apis.LabelServiceProxyName, selection.DoesNotExist, nil)
	if err != nil {
		return err
	}

	noHeadlessEndpoints, err := labels.NewRequirement(v1.IsHeadlessService, selection.DoesNotExist, nil)
	if err != nil {
		return err
	}

	labelSelector := labels.NewSelector()
	labelSelector = labelSelector.Add(*noProxyName, *noHeadlessEndpoints)