- Fixed kubelet creating extra sandbox for pods with RestartPolicyOnFailure after all containers succeeded ([#92614](https://github.com/kubernetes/kubernetes/pull/92614), [@tnqn](https://github.com/tnqn)) [SIG Node and Testing]

  optional ObjectReference involvedObject = 2;

  // This should be a short, machine understandable string that gives the reason
  // for the transition into the object's current status.
  // TODO: provide exact specification for format.
  // +optional
  optional string reason = 3;

  // A human-readable description of the status of this operation.
  // TODO: decide on maximum length.
  // +optional

- Resolves a spurious "Unknown discovery response content-type" error in client-go discovery requests by tolerating extra content-type parameters in API responses ([#117637](https://github.com/kubernetes/kubernetes/pull/117637), [@seans3](https://github.com/seans3)) [SIG API Machinery]

- Resolves a spurious "Unknown discovery response content-type" error in client-go discovery requests by tolerating extra content-type parameters in API responses ([#117571](https://github.com/kubernetes/kubernetes/pull/117571), [@seans3](https://github.com/seans3)) [SIG API Machinery]

- Add possibility to configure controller manager to use IPv6 dual stack:
  use `--cluster-cidr="<cidr1>,<cidr2>"`.

- Route controller now respects rate limiting to the cloud provider on deletion; previously it was only for create. ([#78581](https://github.com/kubernetes/kubernetes/pull/78581), [@andrewsykim](https://github.com/andrewsykim))
- Removed extra pod creation expectations when daemonset fails to create pods in batches. ([#74856](https://github.com/kubernetes/kubernetes/pull/74856), [@draveness](https://github.com/draveness))

* Add a way to pass extra arguments to etcd. ([#63961](https://github.com/kubernetes/kubernetes/pull/63961), [@mborsz](https://github.com/mborsz))

- API Server tracing can now trace re-entrant api requests. ([#103218](https://github.com/kubernetes/kubernetes/pull/103218), [@dashpole](https://github.com/dashpole)) [SIG API Machinery, CLI, Cloud Provider, Cluster Lifecycle and Instrumentation]

- Kubeadm: fix error adding extra prefix unix:// to CRI endpoints that were missing URL scheme ([#110634](https://github.com/kubernetes/kubernetes/pull/110634), [@pacoxu](https://github.com/pacoxu)) [SIG Cluster Lifecycle]