type: string
              interfacePrefix:
                description: 'InterfacePrefix is the interface name prefix that identifies
                  workload endpoints and so distinguishes them from host endpoint
                  interfaces. Note: in environments other than bare metal, the orchestrators
                  configure this appropriately. For example our Kubernetes and Docker

- The `kubectl wait --for=delete` command now ignores the not found error correctly. ([#96702](https://github.com/kubernetes/kubernetes/pull/96702), [@lingsamuel](https://github.com/lingsamuel))

- Certificate handling improvements:
  - Renew certs as part of upgrade.
  - New `kubeadm alpha phase certs renew` command for renewing certificates.
  - Certificates created with kubeadm now have improved uniqueness of Distinguished Name fields.
- HA improvements:
  - `kubeadm join --experimental-control-plane` can now be used to join control plane instances to an existing cluster.