* Report same Node IP as both internal and external. ([#45201](https://github.com/kubernetes/kubernetes/pull/45201), [@abrarshivani](https://github.com/abrarshivani))

  * Filter out IPV6 node addresses. ([#45181](https://github.com/kubernetes/kubernetes/pull/45181), [@BaluDontu](https://github.com/BaluDontu))

  slightly stricter about what values will be accepted as IP addresses and network
  address ranges (“CIDR blocks”).
  
  In particular, octets within IPv4 addresses are not allowed to have any leading
  `0`s, and IPv4-mapped IPv6 values (e.g. `::ffff:192.168.0.1`) are forbidden.
  These sorts of values can potentially cause security problems when different
  components interpret the same string as referring to different IP addresses

- Kube-proxy: Checked whether IPv6 was available on Linux before using it. ([#131265](https://github.com/kubernetes/kubernetes/pull/131265), [@rikatz](https://github.com/rikatz))

### OpenStack

* Fixed a bug in the OpenStack cloud provider where dual stack deployments (IPv4 and IPv6) did not work well when using kubenet as the network plugin. ([#59749](https://github.com/kubernetes/kubernetes/pull/59749), [@zioproto](https://github.com/zioproto))

- kube-proxy: HealthzBindAddress and MetricsBindAddress now support ipv6 addresses. ([#76320](https://github.com/kubernetes/kubernetes/pull/76320), [@JieJhih](https://github.com/JieJhih))

- Fixing issue with Winkernel Proxier - IPV6 load balancer policies are missing when service is configured with ipFamilyPolicy: RequireDualStack ([#115616](https://github.com/kubernetes/kubernetes/pull/115616), [@princepereira](https://github.com/princepereira)) [SIG Network]

- 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.

- Fixed mounting of NFS volumes when IPv6 address is used as a server. ([#101067](https://github.com/kubernetes/kubernetes/pull/101067), [@Elbehery](https://github.com/Elbehery)) [SIG Storage]

- Fixing issue with Winkernel Proxier - IPV6 load balancer policies are missing when service is configured with ipFamilyPolicy: RequireDualStack ([#115614](https://github.com/kubernetes/kubernetes/pull/115614), [@princepereira](https://github.com/princepereira)) [SIG Network]

* kubeadm now checks that IPv4/IPv6 forwarding is enabled ([#63872](https://github.com/kubernetes/kubernetes/pull/63872), [@kad](https://github.com/kad))