- In dual-stack clusters, kubelet will now set up both IPv4 and IPv6 iptables rules, which may
  fix some problems, eg with HostPorts. ([#94474](https://github.com/kubernetes/kubernetes/pull/94474), [@danwinship](https://github.com/danwinship)) [SIG Network and Node]

    *   Adds IPv6 support for kube-dns using SRV records.
    *   Caveats
        *   Only the CNI bridge and local-ipam plugins have been tested for the alpha release, although other CNI plugins do support IPv6.
        *   HostPorts are not supported.
*   An IPv6 network mask for pod or cluster cidr network must be /66 or longer. For example: 2001:db1::/66, 2001:dead:beef::/76, 2001:cafe::/118 are supported. 2001:db1::/64 is not supported