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			update := tc.update.DeepCopy()
			patchAllocatedValues(After{update}, Before{tc.before})

			beforeIP := tc.before.Spec.ClusterIP
			updateIP := update.Spec.ClusterIP
			if tc.expectSameClusterIPs || tc.expectReducedClusterIPs {
				if beforeIP != updateIP {
					t.Errorf("expected clusterIP to be patched: %q != %q", beforeIP, updateIP)
				}
			} else if beforeIP == updateIP {

	// reqHeaderMu is a 1-element semaphore channel controlling access to sending new requests.
	// Write to reqHeaderMu to lock it, read from it to unlock.
	// Lock reqmu BEFORE mu or wmu.
	reqHeaderMu chan struct{}

	// wmu is held while writing.
	// Acquire BEFORE mu when holding both, to avoid blocking mu on network writes.
	// Only acquire both at the same time when changing peer settings.
	wmu  sync.Mutex
	bw   *bufio.Writer

  - [Urgent Upgrade Notes](#urgent-upgrade-notes)
    - [(No, really, you MUST read this before you upgrade)](#no-really-you-must-read-this-before-you-upgrade)
  - [Changes by Kind](#changes-by-kind-13)
    - [Deprecation](#deprecation)
    - [API Change](#api-change-3)
    - [Feature](#feature-11)
    - [Documentation](#documentation)

                  specific Hostname values to choose the correct Listener and its
                  associated set of Routes. \n Exact matches must be processed before
                  wildcard matches, and wildcard matches must be processed before
                  fallback (empty Hostname value) matches. For example, `\"foo.example.com\"`
                  takes precedence over `\"*.example.com\"`, and `\"*.example.com\"`

    - [Windows](#windows)
    - [OpenStack](#openstack)
    - [API-machinery](#api-machinery)
    - [Auth](#auth)
    - [Azure](#azure)
    - [CLI](#cli)
    - [Network](#network)
  - [Before Upgrading](#before-upgrading)
  - [Known Issues](#known-issues)
  - [Deprecations](#deprecations)
  - [Other Notable Changes](#other-notable-changes-13)
    - [Apps](#apps)
    - [AWS](#aws)
    - [Auth](#auth-1)

  - [1.14 What’s New](#114-whats-new)
  - [Known Issues](#known-issues-1)
  - [Urgent Upgrade Notes](#urgent-upgrade-notes)
    - [(No, really, you MUST read this before you upgrade)](#no-really-you-must-read-this-before-you-upgrade)
  - [Deprecations](#deprecations)
  - [Removed and deprecated metrics](#removed-and-deprecated-metrics)
    - [Removed metrics](#removed-metrics)

the result parameters before they are returned.
If the deferred function has any return values, they are discarded when
the function completes.
(See also the section on <a href="#Handling_panics">handling panics</a>.)
</p>

<pre>
lock(l)
defer unlock(l)  // unlocking happens before surrounding function returns

// prints 3 2 1 0 before surrounding function returns

    - [Node binaries](#node-binaries-12)
  - [Changelog since v1.18.5](#changelog-since-v1185)
  - [Urgent Upgrade Notes](#urgent-upgrade-notes)
    - [(No, really, you MUST read this before you upgrade)](#no-really-you-must-read-this-before-you-upgrade)
  - [Changes by Kind](#changes-by-kind-13)
    - [API Change](#api-change-2)
    - [Bug or Regression](#bug-or-regression-12)
  - [Dependencies](#dependencies-14)