Reduced the number of cloud API calls and service downtime caused by excessive re-configurations of cluster LBs with externalTrafficPolicy=Local when node readiness changes (https://github.com/kubernetes/kubernetes/issues/111539). The service controller (in cloud-controller-manager) will avoid resyncing nodes which are transitioning between `Ready` / `NotReady` (only for ETP=Local Services).  The LBs used for these services will solely rely on the health check probe defined by the `healthCheckNodePort`...

* Add kubelet --network-plugin-mtu flag for MTU selection ([#30376](https://github.com/kubernetes/kubernetes/pull/30376), [@justinsb](https://github.com/justinsb))
* Let Services preserve client IPs and not double-hop from external LBs (alpha) ([#29409](https://github.com/kubernetes/kubernetes/pull/29409), [@girishkalele](https://github.com/girishkalele))

* Ensure proper serialization of updates and creates in federation test watcher ([#36613](https://github.com/kubernetes/kubernetes/pull/36613), [@mwielgus](https://github.com/mwielgus))
* Add support for SourceIP preservation in Azure LBs ([#36557](https://github.com/kubernetes/kubernetes/pull/36557), [@brendandburns](https://github.com/brendandburns))

  which was already started in https://github.com/kubernetes/kubernetes/pull/109706
  Specifically, we will now reduce the amount of syncs for `ETP=local` services even
  further in the CCM and avoid re-configuring LBs to an even greater extent. ([#111658](https://github.com/kubernetes/kubernetes/pull/111658), [@alexanderConstantinescu](https://github.com/alexanderConstantinescu))