- [IPv4/IPv6 dual-stack](https://kubernetes.io/docs/concepts/services-networking/dual-stack) enables the allocation of both IPv4 and IPv6 addresses to Pods and Services.

from v1beta3 and its management in the kube-system/kubeadm-config ConfigMap. This method of keeping track of what API endpoints exists in the cluster was replaced (in a prior release) by a method to annotate the etcd Pods that `kubeadm` creates in "stacked etcd" clusters. The following CLI sub-phases are deprecated and are now a NO-OP: for `kubeadm join`: "control-plane-join/update-status", for `kubeadm reset`: "update-cluster-status". Unless you are using these phases explicitly, you should not be...

- Added support for projected volume in describe function  ([#70158](https://github.com/kubernetes/kubernetes/pull/70158), [@WanLinghao](https://github.com/WanLinghao))
- kubeadm now automatically creates a new stacked etcd member when joining a new control plane node (does not applies to external etcd) ([#69486](https://github.com/kubernetes/kubernetes/pull/69486), [@fabriziopandini](https://github.com/fabriziopandini))

turn t==="proxyOf"?e:t==="root"?()=>e.root().toProxy():e[t]}}}toProxy(){return this.proxyCache||(this.proxyCache=new Proxy(this,this.getProxyProcessor())),this.proxyCache}addToError(e){if(e.postcssNode=this,e.stack&&this.source&&/\n\s{4}at /.test(e.stack)){let t=this.source;e.stack=e.stack.replace(/\n\s{4}at /,`$&${t.input.from}:${t.start.line}:${t.start.column}$&`)}return e}markDirty(){if(this[Ai]){this[Ai]=!1;let e=this;for(;e=e.parent;)e[Ai]=!1}}get proxyOf(){return this}};ff.exports=_i;_i.default=_i});var...

## Changelog since v1.15.0

### Other notable changes

* kubeadm: implement support for concurrent add/remove of stacked etcd members ([#79677](https://github.com/kubernetes/kubernetes/pull/79677), [@neolit123](https://github.com/neolit123))

		}

		// if more than PodCIDR then
		// - validate for dual stack
		// - validate for duplication
		if len(node.Spec.PodCIDRs) > 1 {
			dualStack, err := netutils.IsDualStackCIDRStrings(node.Spec.PodCIDRs)
			if err != nil {
				allErrs = append(allErrs, field.InternalError(podCIDRsField, fmt.Errorf("invalid PodCIDRs. failed to check with dual stack with error:%v", err)))
			}

mall>:not(.uk-first-column)::before{left:15px}.uk-grid-divider.uk-grid-row-small.uk-grid-stack>.uk-grid-margin,.uk-grid-divider.uk-grid-small.uk-grid-stack>.uk-grid-margin{margin-top:30px}.uk-grid-divider.uk-grid-small.uk-grid-stack>.uk-grid-margin::before{top:-15px;left:30px}.uk-grid-divider.uk-grid-row-small.uk-grid-stack>.uk-grid-margin::before{top:-15px}.uk-grid-divider.uk-grid-column-small.uk-grid-stack>.uk-grid-margin::before{left:30px}.uk-grid-divider.uk-grid-column-medium,.uk-grid-divide...

	stksize    int64                // stack size for current frame
	stkptrsize int64                // prefix of stack containing pointers

	// alignment for current frame.
	// NOTE: when stkalign > PtrSize, currently this only ensures the offsets of
	// objects in the stack frame are aligned. The stack pointer is still aligned
	// only PtrSize.
	stkalign int64

### IPv4/IPv6 run

IPv4/IPv6 dual-stack has been reimplemented for 1.20 to support dual-stack Services, based on user and community feedback. If your cluster has dual-stack enabled, you can create Services which can use IPv4, IPv6, or both, and you can change this setting for existing Services. Details are available in updated [IPv4/IPv6 dual-stack docs](https://docs.k8s.io/concepts/services-networking/dual-stack/), which cover the nuanced array of options.

- Users might specify the `kubectl.kubernetes.io/default-container` annotation in a Pod to...