- Kubeadm: fix skipped etcd upgrade on secondary control-plane nodes when the command `kubeadm upgrade node` is used. ([#85024](https://github.com/kubernetes/kubernetes/pull/85024), [@neolit123](https://github.com/neolit123))

- [Dual-stack] Fixed `generateAPIPodStatus()` of kubelet handling Secondary IP. hostIPs order may not be consistent. If secondary IP is before primary one, current logic adds primary IP twice into `PodIPs`, which leads to error: "may specify no more than one IP for each IP family". ([#116879](https://github.com/kubernetes/kubernetes/pull/116879),...

    * 2. IPv4: api-server will assign an IP from a `service-cluster-ip-range` that is `ipv4` (either the primary or the secondary, according to how they were configured).
    * 2. IPv6: api-server will assign an IP from a `service-cluster-ip-range` that is `ipv6` (either the primary or the secondary, according to how they were configured).
    * Notes (v1.16):
    * 1. IPVS is the only proxy supported (as of v1.16 ) by Dualstack.

- Fixed a bug with dual stack clusters using the beta feature MultiCIDRServiceAllocator which could not create dual stack Services or Services with IPs in the secondary range. Users who wanted to use this feature in version 1.30 with dual stack clusters could work around the issue by setting the feature gate DisableAllocatorDualWrite to true. ([#127598](https://github.com/kubernetes/kubernetes/pull/127598), [@a...

### CLI Improvements

- Upgrades `IPv6Dualstack` to `Beta` and turns it on by default. New clusters or existing clusters are not be affected until an actor starts adding secondary Pods and service CIDRS CLI flags as described here: [IPv4/IPv6 Dual-stack](https://github.com/kubernetes/enhancements/tree/master/keps/sig-network/563-dual-stack) ([#98969](https://github.com/kubernetes/kubernetes/pull/98969), [@khenidak](https:...

* When using IP aliases, use a secondary range rather than subnetwork to reserve cluster IPs. ([#51690](https://github.com/kubernetes/kubernetes/pull/51690), [@bowei](https://github.com/bowei))

* When using IP aliases, use a secondary range rather than subnetwork to reserve cluster IPs. ([#51690](https://github.com/kubernetes/kubernetes/pull/51690), [@bowei](https://github.com/bowei))

- HA improvements:
  - `kubeadm join --experimental-control-plane` can now be used to join control plane instances to an existing cluster.
  - `kubeadm upgrade node experimental-control-plane` can now be used for upgrading secondary control plane instances created with `kubeadm join --experimental-control-plane`.
Multi-arch support (EXPERIMENTAL):

hl.no
hm.no
jan-mayen.no
mr.no
nl.no
nt.no
of.no
ol.no
oslo.no
rl.no
sf.no
st.no
svalbard.no
tm.no
tr.no
va.no
vf.no
// primary and lower secondary schools per county
gs.aa.no
gs.ah.no
gs.bu.no
gs.fm.no
gs.hl.no
gs.hm.no
gs.jan-mayen.no
gs.mr.no
gs.nl.no
gs.nt.no
gs.of.no
gs.ol.no
gs.oslo.no
gs.rl.no