The v1beta1 API used an annotation on Namespaces to activate the DefaultDeny policy for an entire Namespace. To activate default deny in the v1 API, you can create a NetworkPolicy that matches all Pods but does not allow any traffic:

    ```yaml
    kind: NetworkPolicy
    apiVersion: networking.k8s.io/v1

- Commands like `kubectl apply` now return errors if schema-invalid annotations are specified, rather than silently dropping the entire annotations section. ([#83552](https://github.com/kubernetes/kubernetes/pull/83552), [@liggitt](https://github.com/liggitt))

    val elapsedMillis = TimeUnit.NANOSECONDS.toMillis(elapsedNanos)

    // If we're working correctly, this should be greater than 100ms, but less than double that.
    // Previously we had a bug where we would download the entire response body as long as no
    // individual read took longer than 100ms.
    assertThat(elapsedMillis).isLessThan(500L)

    // Do another request to confirm that the discarded connection was not pooled.

 * automatic-closing approach described above is safer.
 *
 * @param <V> the type of the value of this step
 * @since 30.0
 */
// TODO(dpb): Consider reusing one CloseableList for the entire pipeline, modulo combinations.
@DoNotMock("Use ClosingFuture.from(Futures.immediate*Future)")
@J2ktIncompatible
@GwtIncompatible // TODO(dpb): GWT compatibility.
public final class ClosingFuture<V extends @Nullable Object> {

      )
    executeSynchronously(request).assertFailure("$dns returned no addresses for android.com")
    dns.assertRequests("android.com")
  }

  /** We had a bug where failed HTTP/2 calls could break the entire connection.  */
  @Flaky
  @Test
  fun failingCallsDoNotInterfereWithConnection() {
    enableProtocol(Protocol.HTTP_2)
    server.enqueue(MockResponse(body = "Response 1"))

            derived from this one. This plugin configuration will not be resolved or bound to the
            lifecycle unless referenced. Any local configuration for a given plugin will override
            the plugin's entire definition here.</description>
          <association>
            <type>PluginManagement</type>
          </association>
        </field>
      </fields>
      <codeSegments>
        <codeSegment>

- Bumped `ProcMountType` feature...

- Server Side Apply now treats LabelSelector fields as atomic (meaning the entire selector is managed by a single writer and updated together), since they contain interrelated and inseparable fields that do not merge in intuitive ways. ([#93901](https://github.com/kubernetes/kubernetes/pull/93901), [@jpbetz](https://github.com/jpbetz))...

- Kube-apiserver: regular expressions specified with the `--cors-allowed-origins` option are now validated to match the entire `hostname` inside the `Origin` header of the request and 
  must contain '^' or the '//' prefix to anchor to the start, and '$' or the port separator ':' to anchor to 

### Bug or Regression

- Consider only plugin directory and not entire kubelet root when cleaning up mounts ([#112920](https://github.com/kubernetes/kubernetes/pull/112920), [@mattcary](https://github.com/mattcary)) [SIG Storage]