- Kubeadm: enabled the --experimental-watch-progress-notify-interval flag for etcd and set it to 5s. The flag specifies an interval at which etcd sends watch data to the kube-apiserver. ([#111383](https://github.com/kubernetes/kubernetes/pull/111383), [@p0lyn0mial](https://github.com/p0lyn0mial))

footsteps in the distance, and she looked up eagerly, half hoping
that the Mouse had changed his mind, and was coming back to
finish his story.



                           CHAPTER IV

                The Rabbit Sends in a Little Bill


  It was the White Rabbit, trotting slowly back again, and
looking anxiously about as it went, as if it had lost something;
and she heard it muttering to itself `The Duchess!  The Duchess!

* The PodSecurityPolicy annotation `kubernetes.io/psp` on pods is only set once on create. ([#55486](https://github.com/kubernetes/kubernetes/pull/55486), [@sttts](https://github.com/sttts))

* dockershim: check the error when syncing the checkpoint. ([#52125](https://github.com/kubernetes/kubernetes/pull/52125), [@yujuhong](https://github.com/yujuhong))
* By default, clusters on GCE no longer sends RequestReceived audit event, if advanced audit is configured. ([#52343](https://github.com/kubernetes/kubernetes/pull/52343), [@crassirostris](https://github.com/crassirostris))

* For admission webhooks registered for DELETE operations on k8s built APIs or CRDs, the apiserver now sends the existing object as admissionRequest.Request.OldObject to the webhook.  ([#76346](https://github.com/kubernetes/kubernetes/pull/76346), [@caesarxuchao](https://github.com/caesarxuchao))

- Disruption controller only sends one event per PodDisruptionBudget if scale can't be computed ([#98128](https://github.com/kubernetes/kubernetes/pull/98128), [@mortent](https://github.com/mortent)) [SIG Apps]

* kube-apiserver now drops unneeded path information if an older version of Windows kubectl sends it. ([#44421](https://github.com/kubernetes/kubernetes/pull/44421), [@mml](https://github.com/mml))

                }
                return t.send(request, response, params);
            } catch (final DfsReferral dre) {
                if (dre.getData().unwrap(DfsReferralDataInternal.class).isResolveHashes()) {
                    throw dre;
                }
                request.reset();
                log.trace("send0", dre);
            }
        }

        // Arrange: program send() to simulate first, next, next(NO_MORE_FILES)
        List<String[]> batches = new ArrayList<>();
        batches.add(new String[] { ".", "..", "a", "b" }); // first batch, dot entries filtered
        batches.add(new String[] { "c" }); // second batch
        batches.add(new String[] {}); // last -> NO_MORE_FILES

        // send() answer that mutates the provided response

                             */
            request.addr = addr; /* if addr ends with 255 flag it bcast */
            request.isBroadcast = addr.getAddress()[3] == (byte) 0xFF;

            n = RETRY_COUNT;
            do {
                try {
                    send(request, response, RETRY_TIMEOUT);
                } catch (final IOException ioe) {