- Fixed a regression introduced in v1.29 where conntrack entries for UDP connections
  to deleted pods did not get cleaned up correctly, which could (among other things)
  cause DNS problems when DNS pods were restarted. ([#127780](https://github.com/kubernetes/kubernetes/pull/127780), [@danwinship](https://github.com/danwinship))

unity-pro\u0007cosidns\u0005ddnss\u0012diskussionsbereich\u0007dnshome\ndnsupdater\ndyn-berlin\u0008dyn-ip24\u000fdynamisches-dns\u0007dyndns1\u0006frusky\u000ffuettertdasnetz\u0009git-repos\u0004goip\u0010g\u00fcnstigbestellen\u000eg\u00fcnstigliefern\u000ehome-webserver\u000chs-heilbronn\u0009in-berlin\u0006in-brb\u0009in-butter\u0006in-dsl\u0006in-vpn\u000cinternet-dns\u000biservschule\nisteingeek\u0007istmein\nkeymachine\u0009l-o-g-i-n\u000clcube-server\nlebtimnetz\nleitungsen\nmein-iserv\nm...

    )
  }

  @Test
  fun invalidHost() {
    // Note that 1234.1.1.1 is an invalid host in a URI, but URL isn't as strict.
    client =
      client
        .newBuilder()
        .dns(FakeDns())
        .build()
    assertFailsWith<UnknownHostException> {
      getResponse(
        Request
          .Builder()
          .url("http://1234.1.1.1/index.html".toHttpUrl())
          .build(),

      .assertNoMoreLogs()
  }

  @Test
  fun connectFail() {
    setLevel(Level.BASIC)
    client =
      OkHttpClient
        .Builder()
        .dns { hostname: String? -> throw UnknownHostException("reason") }
        .addInterceptor(applicationInterceptor)
        .build()
    try {
      client.newCall(request().build()).execute()
      fail<Any>()

          listOf(InetAddress.getByName(socketHost))
        } else {
          call.eventListener.dnsStart(call, socketHost)

          val result = address.dns.lookup(socketHost)
          if (result.isEmpty()) {
            throw UnknownHostException("${address.dns} returned no addresses for $socketHost")
          }

          call.eventListener.dnsEnd(call, socketHost, result)
          result
        }

- Fixes a regression introduced in 1.29 where conntrack entries for UDP connections
  to deleted pods did not get cleaned up correctly, which could (among other things)
  cause DNS problems when DNS pods were restarted. ([#127807](https://github.com/kubernetes/kubernetes/pull/127807), [@danwinship](https://github.com/danwinship)) [SIG Network]

- Allowed setting the `hostnameOverride` field in `PodSpec` to specify any RFC 1123 DNS subdomain as the pod's hostname. The `HostnameOverride` feature gate was introduced to control enablement of this functionality. ([#132558](https://github.com/kubernetes/kubernetes/pull/132558), [@HirazawaUi](https://github.com/HirazawaUi)) [SIG API...

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- Kubeadm: Remove the field `ClusterConfiguration.DNS.Type` in v1beta3 since CoreDNS is the only supported DNS type. ([#101547](https://github.com/kubernetes/kubernetes/pull/101547), [@neolit123](https://github.com/neolit123))

Previously introduced in 1.19 behind a feature gate, `SetHostnameAsFQDN` is now enabled by default. More details on this behavior are available in [documentation for DNS for Services and Pods](https://docs.k8s.io/concepts/services-networking/dns-pod-service/#pod-sethostnameasfqdn-field)

### `TokenRequest` / `TokenRequestProjection` graduates to General Availability