Channels act as first-in-first-out queues.
For example, if one goroutine sends values on a channel
and a second goroutine receives them, the values are
received in the order sent.
</p>

<h2 id="Properties_of_types_and_values">Properties of types and values</h2>

<h3 id="Representation_of_values">Representation of values</h3>

<p>
Values of predeclared types (see below for the interfaces <code>any</code>

  slightly stricter about what values will be accepted as IP addresses and network
  address ranges (“CIDR blocks”).
  
  In particular, octets within IPv4 addresses are not allowed to have any leading
  `0`s, and IPv4-mapped IPv6 values (e.g. `::ffff:192.168.0.1`) are forbidden.
  These sorts of values can potentially cause security problems when different

- The kubectl --dry-run flag now accepts the values 'client', 'server', and 'none', to support client-side and server-side dry-run strategies. The boolean and unset values for the --dry-run flag are deprecated and a value will be required in a future version. ([#87580](https://github.com/kubernetes/kubernetes/pull/87580), [@julianvmodesto](https://github.com/julianvmodesto))...

  * Passing multiple values separated by a comma in a single --from-literal flag is no longer supported. Please use multiple --from-literal flags to provide multiple values.

- The `TerminationGracePeriodSeconds` on pod specs and container probes should not be negative. Negative values of `TerminationGracePeriodSeconds` will be treated as the value `1s` on the delete path. Immutable field validation will be relaxed in order to update negative values. In a future release, negative values will not be permitted. ([#98866](https://github.com/kubernetes/kubernetes/pull/98866), [@wzshiming](https://github.com/wzshiming))

  It may affect some metrics values related to the `NodeAffinity` Filter plugin. ([#114125](https://github.com/kubernetes/kubernetes/pull/114125), [@sanposhiho](https://github.com/sanposhiho))
- Scheduler now skips `InterPodAffinity` Filter plugin when `InterPodAffinity` Filter plugin has nothing to do with a Pod.

- Hashing of KeyID in Logs
  

  The `flowcontrol.apiserver.k8s.io/v1beta3` APIs are deprecated and will no longer be served in v1.32. All existing objects are available via the `v1` APIs. Transition clients and manifests to...

- Fixed a bug in the `NestedNumberAsFloat64` Unstructured field accessor that could have caused it to return rounded float64 values instead of errors when accessing very large int64 values. ([#128099](https://github.com/kubernetes/kubernetes/pull/128099), [@benluddy](https://github.com/benluddy))

## Changelog since v1.20.11

## Changes by Kind

### API Change

- Kube-apiserver: Fixes handling of CRD schemas containing literal null values in enums (#104990, @liggitt) [SIG API Machinery, Apps and Network]

### Bug or Regression

- Detach volumes from vSphere nodes not tracked by attach-detach controller (#104910, @gnufied) [SIG Cloud Provider and Storage]