* If you are running E2E tests which require SSH keys and you utilize environment variables to override their location, you may need to modify the environment variable set. On all providers the environment variable override can now be either an absolute path to the key or a relative path (relative to ~/.ssh). Specifically the changes are:

### SIG Network

- Corrected family type (inet6) for ipsets in ipv6-only clusters ([#68436](https://github.com/kubernetes/kubernetes/pull/68436), [@uablrek](https://github.com/uablrek))
- kube-proxy argument `hostname-override` can be used to override hostname defined in the configuration file ([#69340](https://github.com/kubernetes/kubernetes/pull/69340), [@stevesloka](https://github.com/stevesloka))

    //                                                                       Name Override
    //                                                                       =============
    @Override
    public String asTableDbName() {
        return "user";
    }

    @Override
    public String xgetAliasName() {
        return "user";
    }

- Kube-apiserver: Each unique set of etcd server overrides specified with `--etcd-servers-overrides` surfaced health checks named `etcd-override-<index>` and `etcd-override-readiness-<index>`. These checks were still excluded by the `?exclude=etcd` and `?exclude=etcd-readiness` directives. ([#129438](https://github.com/kubernetes/kubernetes/pull/129438), [@pa...

--port=0 to kube-controller-manager and kube-scheduler manifests to disable insecure serving. Without this flag the components by default serve (e.g. /metrics) insecurely on the default node interface (controlled by --address). Users that wish to override this behavior and enable insecure serving can pass a custom --port=X via kubeadm's "extraArgs" mechanic for these components. ([#92720](https://github.com/kubernetes/kubernetes/pull/92720), [@neolit123](https://github.com/neolit123)) [SIG Cluster...

### Bug or Regression

  *  Use StorageClassName for etcd pvc ([#46323](https://github.com/kubernetes/kubernetes/pull/46323), [@marun](https://github.com/marun))

* Bug fixes:

	* Allow disabling federation controllers through override args ([#44209](https://github.com/kubernetes/kubernetes/pull/44209), [@irfanurrehman](https://github.com/irfanurrehman))

* Removed deprecated --require-kubeconfig flag, removed default --kubeconfig value (([#58367](https://github.com/kubernetes/kubernetes/pull/58367), [@zhangxiaoyu-zidif](https://github.com/zhangxiaoyu-zidif))

* kube-proxy needs to be configured to override hostname in some environments. ([#857](https://github.com/kubernetes/kubeadm/issues/857), [@detiber](https://github.com/detiber))

*   Fixed a bug so that volumes are now detached from stopped nodes. ([#55893](https://github.com/kubernetes/kubernetes/pull/55893),[ @gnufied](https://github.com/gnufied))