## Changelog since v1.5.7

### Other notable changes

* Update dnsmasq to the latest version. ([#53149](https://github.com/kubernetes/kubernetes/pull/53149), [@bowei](https://github.com/bowei))

### Bug or Regression

- Fix missing delete events on informer re-lists to ensure all delete events are correctly emitted and using the latest known object state, so that all event handlers and stores always reflect the actual apiserver state as best as possible ([#115900](https://github.com/kubernetes/kubernetes/pull/115900), [@odinuge](https://github.com/odinuge)) [SIG API Machinery]

	* Add redirect support to SpdyRoundTripper ([#44451](https://github.com/kubernetes/kubernetes/pull/44451), [@ncdc](https://github.com/ncdc))

	* Duplicate recurring Events now include the latest event's Message string ([#46034](https://github.com/kubernetes/kubernetes/pull/46034), [@kensimon](https://github.com/kensimon))

* Bug fixes:

### Bug or Regression

- Fix missing delete events on informer re-lists to ensure all delete events are correctly emitted and using the latest known object state, so that all event handlers and stores always reflect the actual apiserver state as best as possible ([#115899](https://github.com/kubernetes/kubernetes/pull/115899), [@odinuge](https://github.com/odinuge)) [SIG API Machinery]

- Fixed missing delete events on informer re-lists to ensure all delete events were correctly emitted and using the latest known object state, so that all event handlers and stores always reflect the actual apiserver state as best as possible ([#115620](https://github.com/kubernetes/kubernetes/pull/115620), [@odinuge](https://github.com/odinuge))

### Bug or Regression

- Fix missing delete events on informer re-lists to ensure all delete events are correctly emitted and using the latest known object state, so that all event handlers and stores always reflect the actual apiserver state as best as possible ([#115901](https://github.com/kubernetes/kubernetes/pull/115901), [@odinuge](https://github.com/odinuge)) [SIG API Machinery]

- Update the latest validated version of Docker to 20.10 ([#98977](https://github.com/kubernetes/kubernetes/pull/98977), [@neolit123](https://github.com/neolit123)) [SIG CLI, Cluster Lifecycle and Node]

  - apiserver_flowcontrol_current_r: R(the time of the last change in state of the queues)
  - apiserver_flowcontrol_dispatch_r: R(the time of the latest request dispatch)
  - apiserver_flowcontrol_latest_s: S(the request last dispatched) = R(when that request starts executing in the virtual world)
  - apiserver_flowcontrol_next_s_bounds: min and max next S among non-empty queues

- Remove offensive words from kubectl cluster-info command. ([#95202](https://github.com/kubernetes/kubernetes/pull/95202), [@rikatz](https://github.com/rikatz))
- Remove support for "ci/k8s-master" version label in kubeadm, use "ci/latest" instead. See [kubernetes/test-infra#18517](https://github.com/kubernetes/test-infra/pull/18517). ([#93626](https://github.com/kubernetes/kubernetes/pull/93626), [@vikkyomkar](https://github.com/vikkyomkar))

                              metric:
                                description: |-
                                  One of the well-known [Istio Standard Metrics](https://istio.io/latest/docs/reference/config/metrics/).