- One new field "InternalTrafficPolicy" in Service is added.
  It specifies if the cluster internal traffic should be routed to all endpoints or node-local endpoints only.
  "Cluster" routes internal traffic to a Service to all endpoints.
  "Local" routes traffic to node-local endpoints only, and traffic is dropped if no node-local endpoints are ready.

* Orphaned routes are properly removed from terminated instances. ([#56258](https://github.com/kubernetes/kubernetes/pull/56258), [@databus23](https://github.com/databus23))

- Fixed CSI `PersistentVolumes` to allow Secrets names longer than 63 characters. ([#114776](https://github.com/kubernetes/kubernetes/pull/114776), [@jsafrane](https://github.com/jsafrane))
- Fixed Route controller to update routes when NodeIP changes ([#108095](https://github.com/kubernetes/kubernetes/pull/108095), [@lzhecheng](https://github.com/lzhecheng))

* Allow node IPAM controller to configure IPAMFromCluster mode to use IP aliases instead of routes in GCP. ([#59688](https://github.com/kubernetes/kubernetes/pull/59688), [@jingax10](https://github.com/jingax10))

* FIX: The OpenStack cloud providers DeleteRoute method fails to delete routes when it can’t find the corresponding instance in OpenStack. ([#62729](https://github.com/kubernetes/kubernetes/pull/62729), [@databus23](https://github.com/databus23))

* bootstrap: Start hostNetwork pods even if network plugin not ready ([#33347](https://github.com/kubernetes/kubernetes/pull/33347), [@justinsb](https://github.com/justinsb))
* Factor out post-init swagger and OpenAPI routes ([#32590](https://github.com/kubernetes/kubernetes/pull/32590), [@sttts](https://github.com/sttts))

  - kubelet <= v1.19.14

**Fixed Versions**:
  - kubelet v1.22.2
  - kubelet v1.21.5
  - kubelet v1.20.11
  - kubelet v1.19.15

This vulnerability was reported by Fabricio Voznika and Mark Wolters of Google.

**CVSS Rating:** High (8.8) [CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H](https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)

## Changes by Kind

### Feature

- Fix route conflicted operations when updating multiple routes together ([#88209](https://github.com/kubernetes/kubernetes/pull/88209), [@feiskyer](https://github.com/feiskyer)) [SIG Cloud Provider]

  - kubelet <= v1.19.14

**Fixed Versions**:
  - kubelet v1.22.2
  - kubelet v1.21.5
  - kubelet v1.20.11
  - kubelet v1.19.15

This vulnerability was reported by Fabricio Voznika and Mark Wolters of Google.

**CVSS Rating:** High (8.8) [CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H](https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)

## Changes by Kind

- Fix: Route controller should update routes with NodeIP changed ([#116361](https://github.com/kubernetes/kubernetes/pull/116361), [@lzhecheng](https://github.com/lzhecheng)) [SIG Cloud Provider]