* table is internally partitioned to try to permit the indicated number of concurrent updates
   * without contention. Because assignment of entries to these partitions is not necessarily
   * uniform, the actual concurrency observed may vary. Ideally, you should choose a value to
   * accommodate as many threads as will ever concurrently modify the table. Using a significantly

      }

      return value;
    }

    /**
     * Performs routine cleanup following a read. Normally cleanup happens during writes, or from
     * the cleanupExecutor. If cleanup is not observed after a sufficient number of reads, try
     * cleaning up from the read thread.
     */
    void postReadCleanup() {
      if ((readCount.incrementAndGet() & DRAIN_THRESHOLD) == 0) {
        runCleanup();

 *   <dt>An IPv6 "IPv4 mapped" address, {@code "::ffff:192.168.0.1"}.
 *   <dd>{@code 00 00 00 00 00 00 00 00 00 00 ff ff c0 a8 00 01}
 * </dl>
 *
 * <p>A few notes about IPv6 "IPv4 mapped" addresses and their observed use in Java.
 *
 * <p>"IPv4 mapped" addresses were originally a representation of IPv4 addresses for use on an IPv6
 * socket that could receive both IPv4 and IPv6 connections (by disabling the {@code IPV6_V6ONLY}

  /**
   * Creates a {@code LinkedHashSet} instance, with a high enough "initial capacity" that it
   * <i>should</i> hold {@code expectedSize} elements without growth. This behavior cannot be
   * broadly guaranteed, but it is observed to be true for OpenJDK 1.7. It also can't be guaranteed
   * that the method isn't inadvertently <i>oversizing</i> the returned set.
   *
   * @param expectedSize the number of elements you expect to add to the returned set

// https://www.iana.org/domains/root/db/nyc.html
nyc

// obi : OBI Group Holding SE & Co. KGaA
// https://www.iana.org/domains/root/db/obi.html
obi

// observer : Fegistry, LLC
// https://www.iana.org/domains/root/db/observer.html
observer

// office : Microsoft Corporation
// https://www.iana.org/domains/root/db/office.html
office

// okinawa : BRregistry, Inc.

obama.fukui.jp
obama.nagasaki.jp
obanazawa.yamagata.jp
obi
obihiro.hokkaido.jp
obira.hokkaido.jp
objects.lpg.cloudscale.ch
objects.rma.cloudscale.ch
obl.ong
obninsk.su
observablehq.cloud
observer
obu.aichi.jp
obuse.nagano.jp
ocelot.mythic-beasts.com
ochi.kochi.jp
od.ua
odate.akita.jp
odawara.kanagawa.jp
odda.no
odesa.ua
odessa.ua
odo.br
odo.replit.dev

  - [Changelog since v1.18.17](#changelog-since-v11817)
  - [Important Security Information](#important-security-information)
    - [CVE-2021-25735: Validating Admission Webhook does not observe some previous fields](#cve-2021-25735-validating-admission-webhook-does-not-observe-some-previous-fields)
  - [Changes by Kind](#changes-by-kind-2)
    - [API Change](#api-change-1)
    - [Feature](#feature)
    - [Bug or Regression](#bug-or-regression-2)

* Make addon-manager cross-platform and use it with hyperkube ([#25631](https://github.com/kubernetes/kubernetes/pull/25631), [@luxas](https://github.com/luxas))
* kubelet: Optionally, have kubelet exit if lock file contention is observed, using --exit-on-lock-contention flag ([#25596](https://github.com/kubernetes/kubernetes/pull/25596), [@derekparker](https://github.com/derekparker))

The feature gate currently falls back to the default behavior in most cases. Enabling the feature gate will add hints to `EndpointSlices`, but functional differences are only observed in non-dual stack kube-proxy implementation. This is fixed by [#101054](https://github.com/kubernetes/kubernetes/pull/101054).

## Urgent Upgrade Notes 

### (No, really, you MUST read this before you upgrade)

    }
  }

  @Test
  fun interceptorGetsHttp2() {
    platform.assumeHttp2Support()
    enableProtocol(Protocol.HTTP_2)

    // Capture the protocol as it is observed by the interceptor.
    val protocolRef = AtomicReference<Protocol?>()
    val interceptor =
      Interceptor { chain: Interceptor.Chain ->
        protocolRef.set(chain.connection()!!.protocol())