[Sig API Machinery]: https://github.com/kubernetes/community/tree/master/sig-api-machinery

### SIG Apps

- `client-go` event library allows customizing spam filtering function. 
  It is now possible to override `SpamKeyFunc`, which is used by event filtering to detect spam in the events. ([#103918](https://github.com/kubernetes/kubernetes/pull/103918), [@olagacek](https://github.com/olagacek))

### Other (Cleanup or Flake)

- Reduce event spam during a volume operation error. ([#89794](https://github.com/kubernetes/kubernetes/pull/89794), [@msau42](https://github.com/msau42)) [SIG Storage]


# v1.17.4

[Documentation](https://docs.k8s.io)

  * iscsi storage plugin: Fix dangling session when using multiple target portal addresses. ([#46239](https://github.com/kubernetes/kubernetes/pull/46239), [@mtanino](https://github.com/mtanino))


  * Fix log spam due to unnecessary status update when node is deleted. ([#45923](https://github.com/kubernetes/kubernetes/pull/45923), [@verult](https://github.com/verult))

### **Network**

#### **IPv6**

*   [alpha] IPv6 support has been added. Notable IPv6 support details include:
    *   Support for IPv6-only Kubernetes cluster deployments. **<span style="text-decoration:underline;">Note:</span>** This feature does not provide dual-stack support.
    *   Support for IPv6 Kubernetes control and data planes.
    *   Support for Kubernetes IPv6 cluster deployments using kubeadm.

* Run one etcd storage compaction per default interval of 5min. Do not run one for each resource and each CRD. This fixes the compaction log spam and reduces load on etcd. ([#68557](https://github.com/kubernetes/kubernetes/pull/68557), [@sttts](https://github.com/sttts))

### Other (Cleanup or Flake)

- Build: Bump kube-cross to v1.12.17-2 ([#90760](https://github.com/kubernetes/kubernetes/pull/90760), [@justaugustus](https://github.com/justaugustus)) [SIG Release]
- Reduce event spam during a volume operation error. ([#89794](https://github.com/kubernetes/kubernetes/pull/89794), [@msau42](https://github.com/msau42)) [SIG Storage]


# v1.15.11

[Documentation](https://docs.k8s.io)

* Fix memory cgroup notifications, and reduce associated log spam. ([#63220](https://github.com/kubernetes/kubernetes/pull/63220), [@dashpole](https://github.com/dashpole))

- Kubectl: Fixes bug by aggregating 'apply' errors instead of failing after first error ([#89607](https://github.com/kubernetes/kubernetes/pull/89607), [@seans3](https://github.com/seans3)) [SIG CLI and Testing]
- Reduce event spam during a volume operation error. ([#89796](https://github.com/kubernetes/kubernetes/pull/89796), [@msau42](https://github.com/msau42)) [SIG Storage]


# v1.18.0

[Documentation](https://docs.k8s.io)

- Kubelet: Fixed a startup crash in devicemanager. ([#113021](https://github.com/kubernetes/kubernetes/pull/113021), [@rphillips](https://github.com/rphillips))
- Kubelet: fixed log spam from kubelet_getters.go `Path does not exist`. ([#112650](https://github.com/kubernetes/kubernetes/pull/112650), [@rphillips](https://github.com/rphillips))