* Exposed `/debug/flags/v` to allow dynamically set glog logging level.  For example, to change glog level to 3, send a PUT request such as `curl -X PUT http://127.0.0.1:8080/debug/flags/v -d "3"`. ([#63777](https://github.com/kubernetes/kubernetes/pull/63777), [@hzxuzhonghu](https://github.com/hzxuzhonghu))

- Added a path `/header?key=` to `agnhost netexec` allowing one to view what the header value is of the incoming request.

  Ex:
  ```
  $ curl -H "X-Forwarded-For: something" 172.17.0.2:8080/header?key=X-Forwarded-For
  something
  ```
   ([#107796](https://github.com/kubernetes/kubernetes/pull/107796), [@alexanderConstantinescu](https://github.com/alexanderConstantinescu))

pkg syscall (netbsd-arm64-cgo), const ETHER_MIN_LEN ideal-int
pkg syscall (netbsd-arm64-cgo), const ETHERMTU = 1500
pkg syscall (netbsd-arm64-cgo), const ETHERMTU ideal-int
pkg syscall (netbsd-arm64-cgo), const ETHERMTU_JUMBO = 9000
pkg syscall (netbsd-arm64-cgo), const ETHERMTU_JUMBO ideal-int
pkg syscall (netbsd-arm64-cgo), const ETHER_PPPOE_ENCAP_LEN = 8
pkg syscall (netbsd-arm64-cgo), const ETHER_PPPOE_ENCAP_LEN ideal-int

* Bump GCI
* to gci-beta-56-9000-80-0 ([#41027](https://github.com/kubernetes/kubernetes/pull/41027), [@dchen1107](https://github.com/dchen1107))
* to gci-stable-56-9000-84-2 ([#41819](https://github.com/kubernetes/kubernetes/pull/41819), [@dchen1107](https://github.com/dchen1107))
* Bump GCE ContainerVM

- API servers using the default Google Compute Engine bootstrapping scripts will have their insecure port (`:8080`) disabled by default. To enable the insecure port, set `ENABLE_APISERVER_INSECURE_PORT=true` in kube-env or as an environment variable. ([#77447](https://github.com/kubernetes/kubernetes/pull/77447), [@dekkagaijin](https://github.com/dekkagaijin))...

* 🌐 Add Russian translation for `docs/ru/docs/tutorial/static-files.md`. PR [#9580](https://github.com/tiangolo/fastapi/pull/9580) by [@Alexandrhub](https://github.com/Alexandrhub).

#### kubectl:

- Kubelet now exposes `/debug/flags/v` to allow dynamically setting glog logging level.  For example, to change glog level to 3, you only have to send a PUT request like `curl -X PUT http://127.0.0.1:8080/debug/flags/v -d "3"`. ([#64601](https://github.com/kubernetes/kubernetes/pull/64601), [@hzxuzhonghu](https://github.com/hzxuzhonghu))

### SIG OpenStack