* Performance test framework and basic tests for the IPAM controller, to simulate behavior of the four supported modes under lightly loaded and loaded conditions, where load is defined as the number of operations to perform as against the configured kubernetes. ([#61143](https://github.com/kubernetes/kubernetes/pull/61143), [...

- Added more message for no PodSandbox container. ([#107116](https://github.com/kubernetes/kubernetes/pull/107116), [@yxxhero](https://github.com/yxxhero))
- Added prune flag into `diff` command to simulate `apply --prune`. ([#105164](https://github.com/kubernetes/kubernetes/pull/105164), [@ardaguclu](https://github.com/ardaguclu))

  ensuring that any pods created at v1.32 with matchLabelKeys are either removed or already scheduled by the time you reach v1.34.
  
  If you maintain controllers that previously relied on matchLabelKeys (for instance, to simulate scheduling), 
  you likely no longer need to handle matchLabelKeys directly. Instead, you can just rely on the labelSelector field going forward.
  

- Fixed fake client to accept request without metadata.name to better emulate behavior of actual client. ([#126727](https://github.com/kubernetes/kubernetes/pull/126727), [@jpbetz](https://github.com/jpbetz))