- Fix the bug PIP's DNS is deleted if no DNS label service annotation isn't set. ([#87310](https://github.com/kubernetes/kubernetes/pull/87310), [@nilo19](https://github.com/nilo19)) [SIG Cloud Provider]
- Fix: set nil cache entry based on old cache ([#87593](https://github.com/kubernetes/kubernetes/pull/87593), [@aramase](https://github.com/aramase)) [SIG Cloud Provider]

* Fixed a bug in the API server watch cache, which could cause a missing watch event immediately after cache initialization. ([#49992](https://github.com/kubernetes/kubernetes/pull/49992), [@liggitt](https://github.com/liggitt))



# v1.6.8

* 👷 Remove pip cache for Smokeshow as it depends on a requirements.txt. PR [#5700](https://github.com/tiangolo/fastapi/pull/5700) by [@tiangolo](https://github.com/tiangolo).
* 💚 Fix pip cache for Smokeshow. PR [#5697](https://github.com/tiangolo/fastapi/pull/5697) by [@tiangolo](https://github.com/tiangolo).

- Updated cAdvisor to `v0.47.2` and fixed metrics in `cri-o` when a container restarts. ([#118774](https://github.com/kubernetes/kubernetes/pull/118774), [@harche](https://github.com/harche))
- Updated distroless I-tables to use registry.k8s.io/build-image/distroless-iptables:v0.2.5 ([#118541](https://github.com/kubernetes/kubernetes/pull/118541), [@jeremyrickard](https://github.com/jeremyrickard)) [SIG Testing]

### SIG Scheduling

- The equivalence class cache has been redesigned to be a two level cache, resulting in a significant increase in scheduling throughput and performance. ([#65714](https://github.com/kubernetes/kubernetes/pull/65714), [@resouer](https://github.com/resouer))

- Fix the bug PIP's DNS is deleted if no DNS label service annotation isn't set. ([#87312](https://github.com/kubernetes/kubernetes/pull/87312), [@nilo19](https://github.com/nilo19)) [SIG Cloud Provider]
- Fix: set nil cache entry based on old cache ([#87591](https://github.com/kubernetes/kubernetes/pull/87591), [@aramase](https://github.com/aramase)) [SIG Cloud Provider]

* The following deprecated flags were removed from `kube-controller-manager`:

  * `replication-controller-lookup-cache-size`
  * `replicaset-lookup-cache-size`
  * `daemonset-lookup-cache-size`

  Don't use these flags. Using deprecated flags causes the server to print a warning. Using a removed flag causes the server to abort the startup.

- To reduce chances of throttling, VM cache is set to nil when Azure node provisioning state is deleting ([#87635](https://github.com/kubernetes/kubernetes/pull/87635), [@feiskyer](https://github.com/feiskyer)) [SIG Cloud Provider]

  // This can be used to provide different probe parameters at the beginning of a Pod's lifecycle,
  // when it might take a long time to load data or warm a cache, than during steady-state operation.
  // This cannot be updated.
  // More info: https://kubernetes.io/docs/concepts/workloads/pods/pod-lifecycle#container-probes
  // +optional
  optional Probe startupProbe = 22;

- `etcd_helper_cache_hit_count` -> `etcd_helper_cache_hit_total`
- `etcd_helper_cache_miss_count` -> `etcd_helper_cache_miss_total`
- `etcd_helper_cache_entry_count` -> `etcd_helper_cache_entry_total`
- `etcd_request_cache_get_latencies_summary` -> `etcd_request_cache_get_latency_seconds`
- `etcd_request_cache_add_latencies_summary` -> `etcd_request_cache_add_latency_seconds`