primary := v1.IPv4Protocol
	secondary := v1.IPv6Protocol
	if netutils.IsIPv6(network.IP) {
		primary = v1.IPv6Protocol
	}

	networkByFamily[primary] = network
	allocatorByFamily[primary] = alloc
	leaksByFamily[primary] = make(map[string]int)

	if secondaryNetwork != nil && secondaryNetwork.IP != nil {
		if primary == v1.IPv6Protocol {
			secondary = v1.IPv4Protocol
		}

			ip: &networkingv1alpha1.IPAddress{
				ObjectMeta: metav1.ObjectMeta{
					Name: "2001:db8::11",
					Labels: map[string]string{
						networkingv1alpha1.LabelIPAddressFamily: string(v1.IPv6Protocol),
						networkingv1alpha1.LabelManagedBy:       ipallocator.ControllerName,
					},
					CreationTimestamp: metav1.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC),
				},
				Spec: networkingv1alpha1.IPAddressSpec{

// platform-specific setup.
func (s *ProxyServer) platformSetup(ctx context.Context) error {
	// Preserve backward-compatibility with the old secondary IP behavior
	if s.PrimaryIPFamily == v1.IPv4Protocol {
		s.NodeIPs[v1.IPv6Protocol] = net.IPv6zero
	} else {
		s.NodeIPs[v1.IPv4Protocol] = net.IPv4zero
	}
	return nil
}

// platformCheckSupported is called immediately before creating the Proxier, to check

	}

	ipv6Proxier, err := NewProxier(v1.IPv6Protocol, syncPeriod, minSyncPeriod,
		hostname, nodeIPs[v1.IPv6Protocol], recorder, healthzServer,
		healthzBindAddress, config)
	if err != nil {
		return nil, fmt.Errorf("unable to create ipv6 proxier: %v, hostname: %s, nodeIP:%v", err, hostname, nodeIPs[v1.IPv6Protocol])
	}

	// Return a meta-proxier that dispatch calls between the two

	if err != nil {
		return nil, fmt.Errorf("unable to create ipv4 proxier: %v", err)
	}

	ipv6Proxier, err := NewProxier(ctx, v1.IPv6Protocol,
		syncPeriod, minSyncPeriod, masqueradeAll, masqueradeBit,
		localDetectors[v1.IPv6Protocol], hostname, nodeIPs[v1.IPv6Protocol],
		recorder, healthzServer, nodePortAddresses, initOnly)
	if err != nil {
		return nil, fmt.Errorf("unable to create ipv6 proxier: %v", err)
	}

		len(al.serviceIPAllocatorsByFamily) == 2 {

		if service.Spec.IPFamilies[0] == api.IPv4Protocol {
			service.Spec.IPFamilies = append(service.Spec.IPFamilies, api.IPv6Protocol)
		} else if service.Spec.IPFamilies[0] == api.IPv6Protocol {
			service.Spec.IPFamilies = append(service.Spec.IPFamilies, api.IPv4Protocol)
		}
	}

	return nil
}

	r.tree = tree
	return nil
}

func newIPAddress(name string, svc *v1.Service) *networkingv1alpha1.IPAddress {
	family := string(v1.IPv4Protocol)
	if netutils.IsIPv6String(name) {
		family = string(v1.IPv6Protocol)
	}
	return &networkingv1alpha1.IPAddress{
		ObjectMeta: metav1.ObjectMeta{
			Name: name,
			Labels: map[string]string{
				networkingv1alpha1.LabelIPAddressFamily: family,

	primaryFamily := v1.IPv4Protocol
	nodeIPs := map[v1.IPFamily]net.IP{
		v1.IPv4Protocol: net.IPv4(127, 0, 0, 1),
		v1.IPv6Protocol: net.IPv6loopback,
	}

	if len(rawNodeIPs) > 0 {
		if !netutils.IsIPv4(rawNodeIPs[0]) {
			primaryFamily = v1.IPv6Protocol
		}
		nodeIPs[primaryFamily] = rawNodeIPs[0]
		if len(rawNodeIPs) > 1 {

			if utilnet.IsIPv6String(pod.Status.PodIP) {
				ipFamily = v1.IPv6Protocol
			}
		}
	}

	// find an ip that matches the family
	for _, podIP := range pod.Status.PodIPs {
		if (ipFamily == v1.IPv6Protocol) == utilnet.IsIPv6String(podIP.IP) {
			endpointIP = podIP.IP
			break
		}
	}

	if endpointIP == "" {

							{IP: testExternalIPv6},
						},
					},
				},
			},
		},
		{
			desc:     "service with ipv4 clusterIP under ipv6 mode, service should be filtered",
			ipFamily: v1.IPv6Protocol,

			service: &v1.Service{
				ObjectMeta: metav1.ObjectMeta{
					Name:      "invalidIPv4InIPV6Mode",
					Namespace: "test",
				},
				Spec: v1.ServiceSpec{
					ClusterIP: testClusterIPv4,