expectFamilies: []api.IPFamily{api.IPv4Protocol},
				}, {
					name: "ClusterIPs:unset_Policy:unset_Families:v4",
					line: line(),
					svc: svctest.MakeService("foo",
						svctest.SetIPFamilies(api.IPv4Protocol)),
					expectPolicy:   api.IPFamilyPolicySingleStack,
					expectFamilies: []api.IPFamily{api.IPv4Protocol},
				}, {
					name: "ClusterIPs:unset_Policy:unset_Families:v6",

			config: &proxyconfigapi.KubeProxyConfiguration{
				DetectLocalMode: proxyconfigapi.LocalModeClusterCIDR,
				ClusterCIDR:     "10.0.0.0/14",
			},
			primaryIPFamily: v1.IPv4Protocol,
			expected: map[v1.IPFamily]proxyutil.LocalTrafficDetector{
				v1.IPv4Protocol: proxyutil.NewDetectLocalByCIDR("10.0.0.0/14"),
				v1.IPv6Protocol: proxyutil.NewNoOpLocalDetector(),
			},
		},
		{

					IPFamilies: []v1.IPFamily{v1.IPv6Protocol, v1.IPv4Protocol},
				},
			},
		},

		{
			name:           "service dual stack ipv6,4. want ipv4",
			requestFamily:  v1.IPv4Protocol,
			expectedResult: "10.0.0.10",
			service: v1.Service{
				Spec: v1.ServiceSpec{
					ClusterIPs: []string{"2000::1", "10.0.0.10"},
					IPFamilies: []v1.IPFamily{v1.IPv6Protocol, v1.IPv4Protocol},
				},
			},
		},
	}

					addrs: []net.Addr{&net.IPNet{IP: netutils.ParseIPSloppy("100.200.201.1"), Mask: net.CIDRMask(24, 32)}},
				},
			},
			expected: map[v1.IPFamily]expectation{
				v1.IPv4Protocol: {
					ips: sets.New[string]("10.20.30.51"),
				},
				v1.IPv6Protocol: {
					matchAll: true,
					ips:      nil,
				},
			},
		},
		{
			name:  "IPv4 zero CIDR",

			rawNodeIPs:     nil,
			bindAddress:    "",
			expectedFamily: v1.IPv4Protocol,
			expectedIPv4:   "127.0.0.1",
			expectedIPv6:   "::1",
		},
		{
			name:           "No Valid IP found and unspecified bind address",
			rawNodeIPs:     nil,
			bindAddress:    "0.0.0.0",
			expectedFamily: v1.IPv4Protocol,
			expectedIPv4:   "127.0.0.1",
			expectedIPv6:   "::1",
		},
		{

				ClusterIPs: []string{"192.168.1.1"},
				IPFamilies: []corev1.IPFamily{corev1.IPv4Protocol},
			},
		},
		&corev1.Service{
			ObjectMeta: metav1.ObjectMeta{Namespace: "two", Name: "two"},
			Spec: corev1.ServiceSpec{
				ClusterIP:  "192.168.1.100",
				ClusterIPs: []string{"192.168.1.100"},
				IPFamilies: []corev1.IPFamily{corev1.IPv4Protocol},
			},
		},
		&corev1.Service{ // outside CIDR, will be dropped

		ipFamily      v1.IPFamily
		ipModeEnabled bool
	}{
		{
			desc:     "nothing",
			ipFamily: v1.IPv4Protocol,

			service:  nil,
			expected: map[ServicePortName]*BaseServicePortInfo{},
		},
		{
			desc:     "headless service",
			ipFamily: v1.IPv4Protocol,

			service: makeTestService("ns2", "headless", func(svc *v1.Service) {
				svc.Spec.Type = v1.ServiceTypeClusterIP

	// Should return 503 "ServiceUnavailable" if IPv4 proxier exceed max update-processing time.
	hs.QueuedUpdate(v1.IPv4Protocol)
	fakeClock.Step(25 * time.Second)
	testHTTPHandler(hsTest, http.StatusServiceUnavailable, t)

	// Should return 200 "OK" after processing update for both IPv4 and IPv6 proxiers.
	hs.Updated(v1.IPv4Protocol)
	hs.Updated(v1.IPv6Protocol)
	fakeClock.Step(5 * time.Second)
	testHTTPHandler(hsTest, http.StatusOK, t)

				},
			},
		},
	}

	for name, tc := range testCases {
		t.Run(name, func(t *testing.T) {
			esCache := NewEndpointSliceCache(tc.hostname, v1.IPv4Protocol, nil, nil)

			cmc := newCacheMutationCheck(tc.endpointSlices)
			for _, endpointSlice := range tc.endpointSlices {
				esCache.updatePending(endpointSlice, false)
			}

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