- `Scheduler` now registers event handlers dynamically. ([#101394](https://github.com/kubernetes/kubernetes/pull/101394), [@Huang-Wei](https://github.com/Huang-Wei))
- `kubectl`: Enable using protocol buffers to request Metrics API. ([#102039](https://github.com/kubernetes/kubernetes/pull/102039), [@serathius](https://github.com/serathius))

### Documentation

- This code change fixes the bug that UDP services would trigger unnecessary LoadBalancer updates. The root cause is that a field not working for non-TCP protocols is considered.
  ref: https://github.com/kubernetes-sigs/cloud-provider-azure/pull/1090 ([#107981](https://github.com/kubernetes/kubernetes/pull/107981), [@lzhecheng](https://github.com/lzhecheng))

pkg syscall (linux-arm-cgo), type RawSockaddrLinklayer struct, Ifindex int32
pkg syscall (linux-arm-cgo), type RawSockaddrLinklayer struct, Pkttype uint8
pkg syscall (linux-arm-cgo), type RawSockaddrLinklayer struct, Protocol uint16
pkg syscall (linux-arm-cgo), type RawSockaddrNetlink struct
pkg syscall (linux-arm-cgo), type RawSockaddrNetlink struct, Family uint16
pkg syscall (linux-arm-cgo), type RawSockaddrNetlink struct, Groups uint32

* Add FastAPI with Swagger UI cheatsheet to external links. PR [#671](https://github.com/tiangolo/fastapi/pull/671) by [@euri10](https://github.com/euri10).
* Fix typo in HTTP protocol in CORS example. PR [#647](https://github.com/tiangolo/fastapi/pull/647) by [@forestmonster](https://github.com/forestmonster).

    * Introduce Alpha field `AllowWatchBookmarks` in ListOptions for requesting watch bookmarks from apiserver. The implementation in apiserver is hidden behind feature gate `WatchBookmark` (currently in Alpha stage).
* Override protocol between etcd server and kube-apiserver on master with HTTPS instead HTTP when mTLS is enabled in GCE ([#74690](https://github.com/kubernetes/kubernetes/pull/74690), [@wenjiaswe](https://github.com/wenjiaswe))

* AWS: Avoid spurious ELB listener recreation - ignore case when matching protocol ([#47391](https://github.com/kubernetes/kubernetes/pull/47391), [@justinsb](https://github.com/justinsb))

    * If you are using docker manifests there are not visible changes.

### Other notable changes

* Use HTTPS as etcd-apiserver protocol when mTLS between etcd and kube-apiserver on master is enabled, change etcd metrics/health port to 2382. ([#77561](https://github.com/kubernetes/kubernetes/pull/77561), [@wenjiaswe](https://github.com/wenjiaswe))

## Changelog since v1.26.6

## Changes by Kind

### API Change

- GCE does not support LoadBalancer Services with ports with different protocols (TCP and UDP) ([#115966](https://github.com/kubernetes/kubernetes/pull/115966), [@aojea](https://github.com/aojea)) [SIG Apps and Cloud Provider]

### Feature

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//}\n\n    abbr[title]::after {\n      content: \" (\" attr(title) \")\";\n    }\n\n    // Bootstrap specific; comment the following selector out\n    //\n    // Don't show links that are fragment identifiers,\n    // or use the `javascript:` pseudo protocol\n    //\n\n    //a[href^=\"#\"]::after,\n    //a[href^=\"javascript:\"]::after {\n    // content: \"\";\n    //}\n\n    pre {\n      white-space: pre-wrap !important;\n    }\n    pre,\n    blockquote {\n      border: $border-width solid $gray-500;...