- Multiple Kubernetes clusters can now share the same resource group
    - When upgrading from previous releases, issues will arise with public IPs if multiple clusters share the same resource group. To solve these problems, make the following changes to the cluster:
Recreate the relevant LoadBalancer services, or add a new tag 'kubernetes-cluster-name: <cluster-name>' manually for existing public IPs.

- Fixes a regression introduced in 1.29 where conntrack entries for UDP connections
  to deleted pods did not get cleaned up correctly, which could (among other things)
  cause DNS problems when DNS pods were restarted. ([#127807](https://github.com/kubernetes/kubernetes/pull/127807), [@danwinship](https://github.com/danwinship)) [SIG Network]

  
  In particular, octets within IPv4 addresses are not allowed to have any leading
  `0`s, and IPv4-mapped IPv6 values (e.g. `::ffff:192.168.0.1`) are forbidden.
  These sorts of values can potentially cause security problems when different
  components interpret the same string as referring to different IP addresses
  (as in CVE-2021-29923).
  
  This tightening applies only to fields in built-in API kinds, and not to

    - **Known issues**

        - Kernel crash with Aufs storage driver on Debian Jessie
          ([#27885](https://github.com/kubernetes/kubernetes/issues/27885)).
          The issue can be identified by using the node problem detector.

        - File descriptor leak on init/control.
          ([#275](https://github.com/containerd/containerd/issues/275))

        - Additional memory overhead per container.

- Don't use a custom dialer for the kubelet if is not rotating certificates, so we can reuse TCP connections and have only one between the apiserver and the kubelet.

*   Problems deleting local static pods have been resolved. ([#48339](https://github.com/kubernetes/kubernetes/pull/48339),[ @dixudx](https://github.com/dixudx))

- A new feature was enabled to improve the performance of the iptables mode of `kube-proxy` in large clusters. No action was required, however:
  

- Added request...

- kube- and cloud-controller-manager can now listen on ports up to 65535 rather than 32768, solving problems with operating systems that request these higher ports.. ([#65860](https://github.com/kubernetes/kubernetes/pull/65860), [@sttts](https://github.com/sttts))

### Other (Cleanup or Flake)

- Improve kubectl run and debug attach problems error ([#110764](https://github.com/kubernetes/kubernetes/pull/110764), [@soltysh](https://github.com/soltysh)) [SIG CLI]