- Tighten validation on the qosClass field of pod status. This field is immutable but it would be populated with the old status by kube-apiserver if it is unset in the new status when updating this field via the status subsource. ([#127744](https://github....

- Added support to the kube-proxy nodePortAddresses / --nodeport-addresses option to
  accept the value "primary", meaning to only listen for NodePort connections
  on the node's primary IPv4 and/or IPv6 address (according to the Node object).
  This is strongly recommended, if you were not previously using
  --nodeport-addresses, to avoid surprising behavior.