"k8s.io/kubernetes/pkg/controller/garbagecollector"
	namespacecontroller "k8s.io/kubernetes/pkg/controller/namespace"
	nodeipamcontroller "k8s.io/kubernetes/pkg/controller/nodeipam"
	nodeipamconfig "k8s.io/kubernetes/pkg/controller/nodeipam/config"
	"k8s.io/kubernetes/pkg/controller/nodeipam/ipam"
	lifecyclecontroller "k8s.io/kubernetes/pkg/controller/nodelifecycle"
	"k8s.io/kubernetes/pkg/controller/podgc"

	jobconfigv1alpha1 "k8s.io/kubernetes/pkg/controller/job/config/v1alpha1"
	namespaceconfigv1alpha1 "k8s.io/kubernetes/pkg/controller/namespace/config/v1alpha1"
	nodeipamconfigv1alpha1 "k8s.io/kubernetes/pkg/controller/nodeipam/config/v1alpha1"
	nodelifecycleconfigv1alpha1 "k8s.io/kubernetes/pkg/controller/nodelifecycle/config/v1alpha1"
	podautoscalerconfigv1alpha1 "k8s.io/kubernetes/pkg/controller/podautoscaler/config/v1alpha1"

*/

package sync

import (
	"context"
	"fmt"
	"net"
	"time"

	"k8s.io/klog/v2"
	netutils "k8s.io/utils/net"

	v1 "k8s.io/api/core/v1"
	"k8s.io/kubernetes/pkg/controller/nodeipam/ipam/cidrset"
)

const (
	// InvalidPodCIDR is the event recorded when a node is found with an
	// invalid PodCIDR.
	InvalidPodCIDR = "CloudCIDRAllocatorInvalidPodCIDR"

import (
	"net"
	"testing"
	"time"

	v1 "k8s.io/api/core/v1"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	"k8s.io/apimachinery/pkg/util/wait"
	"k8s.io/client-go/kubernetes/fake"
	"k8s.io/kubernetes/pkg/controller/nodeipam/ipam/test"
	"k8s.io/kubernetes/pkg/controller/testutil"
	"k8s.io/kubernetes/test/utils/ktesting"
	netutils "k8s.io/utils/net"
)

type testCase struct {
	description     string

	"k8s.io/client-go/tools/cache"
	"k8s.io/client-go/tools/record"
	"k8s.io/client-go/util/workqueue"
	nodeutil "k8s.io/component-helpers/node/util"
	"k8s.io/kubernetes/pkg/controller/nodeipam/ipam/cidrset"
	controllerutil "k8s.io/kubernetes/pkg/controller/util/node"
)

type rangeAllocator struct {
	client clientset.Interface
	// cluster cidrs as passed in during controller creation

) Setter {
	var nodeIP, secondaryNodeIP net.IP
	if len(nodeIPs) > 0 {
		nodeIP = nodeIPs[0]
	}
	preferIPv4 := nodeIP == nil || nodeIP.To4() != nil
	isPreferredIPFamily := func(ip net.IP) bool { return (ip.To4() != nil) == preferIPv4 }
	nodeIPSpecified := nodeIP != nil && !nodeIP.IsUnspecified()

	if len(nodeIPs) > 1 {
		secondaryNodeIP = nodeIPs[1]
	}

func NewConfigurer(recorder record.EventRecorder, nodeRef *v1.ObjectReference, nodeIPs []net.IP, clusterDNS []net.IP, clusterDomain, resolverConfig string) *Configurer {
	return &Configurer{
		recorder:         recorder,
		getHostDNSConfig: getHostDNSConfig,
		nodeRef:          nodeRef,
		nodeIPs:          nodeIPs,
		clusterDNS:       clusterDNS,
		ClusterDomain:    clusterDomain,
		ResolverConfig:   resolverConfig,

	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()))
		}

func validateNodeIP(nodeIP net.IP) error {
	// Honor IP limitations set in setNodeStatus()
	if nodeIP.To4() == nil && nodeIP.To16() == nil {
		return fmt.Errorf("nodeIP must be a valid IP address")
	}
	if nodeIP.IsLoopback() {
		return fmt.Errorf("nodeIP can't be loopback address")
	}
	if nodeIP.IsMulticast() {
		return fmt.Errorf("nodeIP can't be a multicast address")
	}

				config.IPTables.MinSyncPeriod.Duration,
				config.IPTables.MasqueradeAll,
				*config.IPTables.LocalhostNodePorts,
				int(*config.IPTables.MasqueradeBit),
				localDetectors,
				s.Hostname,
				s.NodeIPs,
				s.Recorder,
				s.HealthzServer,
				config.NodePortAddresses,
				initOnly,
			)
		} else {