* StatefulSet will now fill the `hostname` and `subdomain` fields if they're empty on existing Pods it owns. This allows it to self-correct the issue where StatefulSet Pod DNS entries disappear after upgrading to v1.7.x ([#48327](https://github.com/kubernetes/kubernetes/pull/48327)). ([#51199](https://...

- `StatefulSet` names must be DNS labels, rather than subdomains. Any `StatefulSet`
  which took advantage of subdomain validation (by having dots in the name) can't
  possibly have worked, because we eventually set `pod.spec.hostname` from the `StatefulSetName`,

- Allowed setting the `hostnameOverride` field in `PodSpec` to specify any RFC 1123 DNS subdomain as the pod's hostname. The `HostnameOverride` feature gate was introduced to control enablement of this functionality. ([#132558](https://github.com/kubernetes/kubernetes/pull/132558), [@HirazawaUi](https://github.com/HirazawaUi)) [SIG API Machinery,...

- Dynamic Resource Allocator (DRA): Enhanced validation for the ResourceClaimParametersReference and ResourceClassParametersReference with the following rules:
  
  1. `apiGroup`: If set, it must be a valid DNS subdomain (e.g. 'example.com').

### Other notable changes

* Update kube-dns to 1.14.5 ([#53114](https://github.com/kubernetes/kubernetes/pull/53114), [@bowei](https://github.com/bowei))

freeddns.us

// nsupdate.info : https://www.nsupdate.info/
// Submitted by Thomas Waldmann <******@****.***>
nsupdate.info
nerdpol.ovh

// NYC.mn : https://dot.nyc.mn/
// Submitted by NYC.mn Subdomain Service <******@****.***>
nyc.mn

// O3O.Foundation : https://o3o.foundation/
// Submitted by the prvcy.page Registry Team <******@****.***tion>
prvcy.page

// Obl.ong : <https://obl.ong>

* `StubDomains` and `Upstreamnameserver` which contains a service name will be omitted while translating to the equivalent CoreDNS config. ([#75969](https://github.com/kubernetes/kubernetes/pull/75969), [@rajansandeep](https://github.com/rajansandeep))