if err != nil {
		logger.Error(err, "Deleted node has an invalid podCIDR", "node", klog.KObj(op.node), "podCIDR", op.node.Spec.PodCIDR)
		sync.kubeAPI.EmitNodeWarningEvent(op.node.Name, InvalidPodCIDR,
			"Node %q has an invalid PodCIDR: %q", op.node.Name, op.node.Spec.PodCIDR)
		return nil
	}

	sync.set.Release(cidrRange)

		}
		if len(testInput.PodCIDR) > 0 && coreNodeSpec.PodCIDRs[0] != testInput.PodCIDR {
			t.Errorf("%v:Convert v1.NodeSpec to core.NodeSpec failed. expected coreNodeSpec.PodCIDRs[0]=%v found %v", i, testInput.PodCIDR, coreNodeSpec.PodCIDRs[0])
		}
		// match ip list
		for idx := range testInput.PodCIDRs {
			if coreNodeSpec.PodCIDRs[idx] != testInput.PodCIDRs[idx] {

			if len(node.Spec.PodCIDRs) == 0 {
				logger.V(4).Info("Node has no CIDR, ignoring", "node", klog.KObj(&node))
				continue
			}
			logger.V(4).Info("Node has CIDR, occupying it in CIDR map", "node", klog.KObj(&node), "podCIDR", node.Spec.PodCIDR)
			if err := ra.occupyCIDRs(&node); err != nil {
				// This will happen if:
				// 1. We find garbage in the podCIDRs field. Retrying is useless.

// NodeSpecApplyConfiguration represents an declarative configuration of the NodeSpec type for use
// with apply.
type NodeSpecApplyConfiguration struct {
	PodCIDR            *string                             `json:"podCIDR,omitempty"`
	PodCIDRs           []string                            `json:"podCIDRs,omitempty"`
	ProviderID         *string                             `json:"providerID,omitempty"`

		return err
	}
	// If both fields (v1.PodCIDRs and v1.PodCIDR) are provided and differ, then PodCIDR is authoritative for compatibility with older clients
	if (len(in.PodCIDR) > 0 && len(in.PodCIDRs) > 0) && (in.PodCIDR != in.PodCIDRs[0]) {
		out.PodCIDRs = []string{in.PodCIDR}
	}

	// at the this point, autoConvert copied v1.PodCIDRs -> core.PodCIDRs
	// if v1.PodCIDRs was empty but v1.PodCIDR is not, then set core.PodCIDRs[0] with v1.PodCIDR

func (kl *Kubelet) updatePodCIDR(ctx context.Context, cidr string) (bool, error) {
	kl.updatePodCIDRMux.Lock()
	defer kl.updatePodCIDRMux.Unlock()

	podCIDR := kl.runtimeState.podCIDR()

	if podCIDR == cidr {
		return false, nil
	}

	// kubelet -> generic runtime -> runtime shim -> network plugin
	// docker/non-cri implementations have a passthrough UpdatePodCIDR

	if s.Config.DetectLocalMode == proxyconfigapi.LocalModeNodeCIDR {
		logger.Info("Watching for node, awaiting podCIDR allocation", "hostname", s.Hostname)
		node, err := waitForPodCIDR(ctx, s.Client, s.Hostname)
		if err != nil {
			return err
		}
		s.podCIDRs = node.Spec.PodCIDRs
		logger.Info("NodeInfo", "podCIDRs", node.Spec.PodCIDRs)
	}

	err := s.setupConntrack(ctx)
	if err != nil {
		return err
	}

	return nil
}

      kubeletConfigKey: kubeletConfigKeyValue
      name: nameValue
      namespace: namespaceValue
      resourceVersion: resourceVersionValue
      uid: uidValue
  externalID: externalIDValue
  podCIDR: podCIDRValue
  podCIDRs:
  - podCIDRsValue
  providerID: providerIDValue
  taints:
  - effect: effectValue
    key: keyValue
    timeAdded: "2004-01-01T01:01:01Z"
    value: valueValue
  unschedulable: true
status:

	}
}

var nodeWithoutCIDRRange = &v1.Node{
	ObjectMeta: metav1.ObjectMeta{Name: "node1"},
}

var nodeWithCIDRRange = &v1.Node{
	ObjectMeta: metav1.ObjectMeta{Name: "node1"},
	Spec:       v1.NodeSpec{PodCIDR: "10.1.1.0/24"},
}

func TestNodeSyncUpdate(t *testing.T) {
	t.Parallel()

	for _, tc := range []struct {
		desc string
		mode NodeSyncMode
		node *v1.Node
		fake fakeAPIs

        "time": "2004-01-01T01:01:01Z",
        "fieldsType": "fieldsTypeValue",
        "fieldsV1": {},
        "subresource": "subresourceValue"
      }
    ]
  },
  "spec": {
    "podCIDR": "podCIDRValue",
    "podCIDRs": [
      "podCIDRsValue"
    ],
    "providerID": "providerIDValue",
    "unschedulable": true,
    "taints": [
      {
        "key": "keyValue",
        "value": "valueValue",