// NodePortAddresses object for the given family. If there are no CIDRs of the given
// family then the CIDR "0.0.0.0/0" or "::/0" will be added (even if there are CIDRs of
// the other family).
func NewNodePortAddresses(family v1.IPFamily, cidrStrings []string) *NodePortAddresses {
	npa := &NodePortAddresses{}

	// Filter CIDRs to correct family
	for _, str := range cidrStrings {

	// It doesn't matter whether we listen on "0.0.0.0", "::", or ""; go
	// treats them all the same.
	nodeIPs := []net.IP{net.IPv4zero}

	if !nodePortAddresses.MatchAll() {
		ips, err := nodePortAddresses.GetNodeIPs(proxyutil.RealNetwork{})
		if err == nil {
			nodeIPs = ips

}

func validateKubeProxyNodePortAddress(nodePortAddresses []string, fldPath *field.Path) field.ErrorList {
	allErrs := field.ErrorList{}

	for i := range nodePortAddresses {
		if nodePortAddresses[i] == kubeproxyconfig.NodePortAddressesPrimary {
			if i != 0 || len(nodePortAddresses) != 1 {
				allErrs = append(allErrs, field.Invalid(fldPath.Index(i), nodePortAddresses[i], "can't use both 'primary' and CIDRs"))
			}
			break

    text:
      infoBufferSize: "0"
  verbosity: 0
metricsBindAddress: 127.0.0.1:10249
mode: ""
nftables:
  masqueradeAll: false
  masqueradeBit: 14
  minSyncPeriod: 1s
  syncPeriod: 30s
nodePortAddresses: null
oomScoreAdj: -999
portRange: ""
showHiddenMetricsForVersion: ""
winkernel:
  enableDSR: false
  forwardHealthCheckVip: false
  networkName: ""
  rootHnsEndpointName: ""

	s.PrimaryIPFamily, s.NodeIPs = detectNodeIPs(ctx, rawNodeIPs, config.BindAddress)

	if len(config.NodePortAddresses) == 1 && config.NodePortAddresses[0] == kubeproxyconfig.NodePortAddressesPrimary {
		var nodePortAddresses []string
		if nodeIP := s.NodeIPs[v1.IPv4Protocol]; nodeIP != nil && !nodeIP.IsLoopback() {
			nodePortAddresses = append(nodePortAddresses, fmt.Sprintf("%s/32", nodeIP.String()))
		}

			expectedErrs: field.ErrorList{field.Invalid(newPath.Child("NodePortAddresses[0]"), "::0", "must be a valid CIDR"),
				field.Invalid(newPath.Child("NodePortAddresses[1]"), "::1", "must be a valid CIDR")},
		},
		"invalid ipv6 ip format": {
			addresses:    []string{"::1/128", "2001:db8::/32", "2001:db8:xyz/64"},
			expectedErrs: field.ErrorList{field.Invalid(newPath.Child("NodePortAddresses[2]"), "2001:db8:xyz/64", "must be a valid CIDR")},
		},

		err   bool
	}{
		{
			name: "single-stack NodePortAddresses with single-stack config",
			proxy: &ProxyServer{
				Config: &kubeproxyconfig.KubeProxyConfiguration{
					ClusterCIDR:       "10.0.0.0/8",
					NodePortAddresses: []string{"192.168.0.0/24"},
				},
				PrimaryIPFamily: v1.IPv4Protocol,
			},
			err: false,
		},
		{
			name: "dual-stack NodePortAddresses with dual-stack config",
			proxy: &ProxyServer{

	if config.Mode == "" {
		o.logger.Info("Using iptables proxy")
		config.Mode = proxyconfigapi.ProxyModeIPTables
	}

	if config.Mode == proxyconfigapi.ProxyModeNFTables && len(config.NodePortAddresses) == 0 {
		config.NodePortAddresses = []string{proxyconfigapi.NodePortAddressesPrimary}
	}

	if config.DetectLocalMode == "" {

	in.IPVS.DeepCopyInto(&out.IPVS)
	out.Winkernel = in.Winkernel
	in.NFTables.DeepCopyInto(&out.NFTables)
	out.DetectLocal = in.DetectLocal
	if in.NodePortAddresses != nil {
		in, out := &in.NodePortAddresses, &out.NodePortAddresses
		*out = make([]string, len(*in))
		copy(*out, *in)
	}
	if in.OOMScoreAdj != nil {
		in, out := &in.OOMScoreAdj, &out.OOMScoreAdj
		*out = new(int32)
		**out = **in
	}

	recorder       events.EventRecorder

	serviceHealthServer healthcheck.ServiceHealthServer
	healthzServer       *healthcheck.ProxierHealthServer

	// nodePortAddresses selects the interfaces where nodePort works.
	nodePortAddresses *proxyutil.NodePortAddresses
	// networkInterfacer defines an interface for several net library functions.
	// Inject for test purpose.
	networkInterfacer proxyutil.NetworkInterfacer