uncomfortable.

  The first question of course was, how to get dry again:  they
had a consultation about this, and after a few minutes it seemed
quite natural to Alice to find herself talking familiarly with
them, as if she had known them all her life.  Indeed, she had
quite a long argument with the Lory, who at last turned sulky,
and would only say, `I am older than you, and must know better';

  It changes the dual-stack API wrt Service from a single ipFamily field to 3
  fields: ipFamilyPolicy (SingleStack, PreferDualStack, RequireDualStack),
  ipFamilies (a list of families assigned), and clusterIPs (inclusive of
  clusterIP).  Most users do not need to set anything at all, defaulting will
  handle it for them.  Services are single-stack unless the user asks for

- Kube-proxy will now warn at startup if the configuration seems inconsistent
  with respect to IP families. (For example, if you have an IPv4 node IP, but
  `--cluster-cidr` is IPv6.) ([#119003](https://github.com/kubernetes/kubernetes/pull/119003), [@danwinship](https://github.com/danwinship)) [SIG Network]