- Fixed the wrong hierarchical structure for both the child span and the parent span (i.e. `SerializeObject` and `List`). In the past, some children's spans appeared parallel to their parents. ([#127551](https://github.com/kubernetes/kubernetes/pull/127551), [@carlory](https://github.com/carlory)) [SIG API Machinery and Instrumentation]

- API Server Tracing now includes a variety of new spans and span events. ([#113172](https://github.com/kubernetes/kubernetes/pull/113172), [@dashpole](https://github.com/dashpole)) [SIG API Machinery, Architecture, Auth, Instrumentation, Network, Node and Scheduling]

### **Network**

#### **IPv6**

*   [alpha] IPv6 support has been added. Notable IPv6 support details include:
    *   Support for IPv6-only Kubernetes cluster deployments. **<span style="text-decoration:underline;">Note:</span>** This feature does not provide dual-stack support.
    *   Support for IPv6 Kubernetes control and data planes.
    *   Support for Kubernetes IPv6 cluster deployments using kubeadm.

status reflects the aggregate status across all underlying cluster
jobs.

#### [alpha] Federated Horizontal Pod Autoscaling (HPA)

Federated HPAs are similar to the traditional Kubernetes HPAs, except
that they span multiple clusters. Creating a Federated HPA targeting
multiple clusters ensures that cluster-level autoscalers are
consistently deployed across those clusters, and dynamically managed

    * The audience claim before this fix has "spn:" prefix. After this fix, "spn:" prefix is omitted.
* Fix LoadBalancer rule checking so that no unexpected LoadBalancer updates are made ([#85990](https://github.com/kubernetes/kubernetes/pull/85990), [@feiskyer](https://github.com/feiskyer))

  * iscsi storage plugin: Fix dangling session when using multiple target portal addresses. ([#46239](https://github.com/kubernetes/kubernetes/pull/46239), [@mtanino](https://github.com/mtanino))


  * Fix log spam due to unnecessary status update when node is deleted. ([#45923](https://github.com/kubernetes/kubernetes/pull/45923), [@verult](https://github.com/verult))

- github.com/posener/complete: [v1.1.1](https://github.com/posener/complete/tree/v1.1.1)
- github.com/ryanuber/columnize: [9b3edd6](https://github.com/ryanuber/columnize/tree/9b3edd6)
- github.com/sean-/seed: [e2103e2](https://github.com/sean-/seed/tree/e2103e2)
- github.com/smartystreets/assertions: [b2de0cb](https://github.com/smartystreets/assertions/tree/b2de0cb)

    * The audience claim before this fix has "spn:" prefix. After this fix, "spn:" prefix is omitted.
* Fixes an issue with kubelet-reported pod status on deleted/recreated pods. ([#86320](https://github.com/kubernetes/kubernetes/pull/86320), [@liggitt](https://github.com/liggitt))

- `client-go` event library allows customizing spam filtering function. 
  It is now possible to override `SpamKeyFunc`, which is used by event filtering to detect spam in the events. ([#103918](https://github.com/kubernetes/kubernetes/pull/103918), [@olagacek](https://github.com/olagacek))

- github.com/posener/complete: [v1.1.1](https://github.com/posener/complete/tree/v1.1.1)
- github.com/ryanuber/columnize: [9b3edd6](https://github.com/ryanuber/columnize/tree/9b3edd6)
- github.com/sean-/seed: [e2103e2](https://github.com/sean-/seed/tree/e2103e2)
- github.com/subosito/gotenv: [v1.2.0](https://github.com/subosito/gotenv/tree/v1.2.0)
- github.com/willf/bitset: [d5bec33](https://github.com/willf/bitset/tree/d5bec33)