- Ensure Pods are removed from the scheduler cache when the scheduler misses deletion events due to transient errors ([#106102](https://github.com/kubernetes/kubernetes/pull/106102), [@alculquicondor](https://github.com/alculquicondor)) [SIG Scheduling]

ull/59883), [@kow3ns](https://github.com/kow3ns))

* MountPropagation feature is now beta. As a consequence, all volume mounts in containers are now `rslave` on Linux by default. To make this default work in all Linux environments the entire mount tree should be marked as shareable, e.g. via `mount --make-rshared /`. All Linux distributions that use systemd already have the root directory mounted as rshared and hence they need not do anything. In Linux environments without systemd we...

"strategic merge patch"-type API requests for the `selector` field. Prior to 1.21, these requests would merge `matchLabels` content and replace `matchExpressions` content. In 1.21, patch requests touching the `selector` field started replacing the entire selector. This is consistent with server-side apply and the v1 PodDisruptionBudget behavior, but should not have been changed for v1beta1. ([#108141](https://github.com/kubernetes/kubernetes/pull/108141), [@liggitt](https://github.com/liggitt)) [SIG...

- Kubenet: added HostPort IPv6 support.  HostPortManager: operates only with one IP family, failing if receives port mapping entries with different IP families.  HostPortSyncer: operates only with one IP family, skipping portmap entries with different IP families ([#80854](https://github.com/kubernetes/kubernetes/pull/80854), [@aojea](https://github.com/aojea))

    ```yaml
    kind: NetworkPolicy
    apiVersion: networking.k8s.io/v1
    metadata:
      name: default-deny
    spec:
      podSelector:
    ```

and is not guaranteed to be the same from one iteration to the next.
If a map entry that has not yet been reached is removed during iteration,
the corresponding iteration value will not be produced. If a map entry is
created during iteration, that entry may be produced during the iteration or
may be skipped. The choice may vary for each entry created and from one
iteration to the next.

- Kubelet TCP and HTTP probes are now more effective using networking resources:
  conntrack entries, sockets. This is achieved by reducing the `TIME-WAIT` state
  of the connection to 1 second, instead of the defaults 60 seconds. This allows
  kubelet to free the socket, and free conntrack entry and ephemeral port associated. ([#115143](https://github.com/kubernetes/kubernetes/pull/115143), [@aojea](https://github.com/aojea))

### Bug or Regression

- Fix: skip case sensitivity when checking Azure NSG rules
  fix: ensure InstanceShutdownByProviderID return false for creating Azure VMs ([#104448](https://github.com/kubernetes/kubernetes/pull/104448), [@feiskyer](https://github.com/feiskyer)) [SIG Cloud Provider]

- Bumped `ProcMountType` feature...

- Graduated `PodLevelResources` feature to beta and have it on by default. This feature allowed defining CPU and memory resources for an entire pod in `pod.spec.resources`. ([#132999](https://github.com/kubernetes/kubernetes/pull/132999), [@ndixita](https://github.com/ndixita))