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)

		in   v1.NodeSpec
		out  core.NodeSpec
	}{
		{
			name: "mismatched podCIDR",
			in: v1.NodeSpec{
				PodCIDR:  "10.0.0.0/24",
				PodCIDRs: []string{"10.0.1.0/24", "ace:cab:deca::/8"},
			},
			out: core.NodeSpec{
				PodCIDRs: []string{"10.0.0.0/24"},
			},
		},
		{
			name: "unset podCIDR",
			in: v1.NodeSpec{
				PodCIDR:  "",
				PodCIDRs: []string{"10.0.1.0/24", "ace:cab:deca::/8"},
			},

				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.
				// 2. CIDR out of range: This means a node CIDR has changed.

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

}

// WithPodCIDR sets the PodCIDR field in the declarative configuration to the given value
// and returns the receiver, so that objects can be built by chaining "With" function invocations.
// If called multiple times, the PodCIDR field is set to the value of the last call.
func (b *NodeSpecApplyConfiguration) WithPodCIDR(value string) *NodeSpecApplyConfiguration {
	b.PodCIDR = &value
	return b
}

	}
	// 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

	}
	return 0, nil
}

func waitForPodCIDR(ctx context.Context, client clientset.Interface, nodeName string) (*v1.Node, error) {
	// since allocators can assign the podCIDR after the node registers, we do a watch here to wait
	// for podCIDR to be assigned, instead of assuming that the Get() on startup will have it.
	ctx, cancelFunc := context.WithTimeout(ctx, timeoutForNodePodCIDR)
	defer cancelFunc()

	}
}

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

    configMap:
      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

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