([#121834](https://github.com/kubernetes/kubernetes/pull/121834), [@vaibhav2107](https://github.com/vaibhav2107))
- Changed the API server so that for admission webhooks that have a URL matching the hostname 'localhost' or a loopback IP address, the connection supports HTTP/2 where it could be negotiated.
   ([#122558](https://github.com/kubernetes/kubernetes/pull/122558), [@linxiulei](https://github.com/linxiulei))

	return allErrs
}

// ValidateNonSpecialIP is used to validate Endpoints, EndpointSlices, and
// external IPs. Specifically, this disallows unspecified and loopback addresses
// are nonsensical and link-local addresses tend to be used for node-centric
// purposes (e.g. metadata service).
//
// IPv6 references

- Kube-controller-manager deprecate `--volume-host-cidr-denylist` and `--volume-host-allow-local-loopback` flags. ([#118128](https://github.com/kubernetes/kubernetes/pull/118128), [@carlory](https://github.com/carlory)) [SIG API Machinery, Apps, Network, Node, Storage and Testing]

- Added a kube-proxy flag (`--iptables-localhost-nodeports`, default true) to allow disabling NodePort services on loopback addresses. Note: this only applies to iptables mode and ipv4. ([#108250](https://github.com/kubernetes/kubernetes/pull/108250), [@cyclinder](https://github.com/cyclinder))

- Kube-proxy doesn't set the sysctl `net.ipv4.conf.all.route_localnet=1` if no IPv4 loopback address is selected by the `nodePortAddresses` configuration parameter. ([#107684](https://github.com/kubernetes/kubernetes/pull/107684), [@aojea](https://github.com/aojea))

}

// EndpointAddress is a tuple that describes single IP address.
// +structType=atomic
message EndpointAddress {
  // The IP of this endpoint.
  // May not be loopback (127.0.0.0/8 or ::1), link-local (169.254.0.0/16 or fe80::/10),
  // or link-local multicast (224.0.0.0/24 or ff02::/16).
  optional string ip = 1;

  // The Hostname of this endpoint
  // +optional

	Ports             []EndpointPort
}

// EndpointAddress is a tuple that describes single IP address.
type EndpointAddress struct {
	// The IP of this endpoint.
	// May not be loopback (127.0.0.0/8 or ::1), link-local (169.254.0.0/16 or fe80::/10),
	// or link-local multicast (224.0.0.0/24 or ff02::/16).
	IP string
	// Optional: Hostname of this endpoint
	// Meant to be used by DNS servers etc.

	return map_EmptyDirVolumeSource
}

var map_EndpointAddress = map[string]string{
	"":          "EndpointAddress is a tuple that describes single IP address.",
	"ip":        "The IP of this endpoint. May not be loopback (127.0.0.0/8 or ::1), link-local (169.254.0.0/16 or fe80::/10), or link-local multicast (224.0.0.0/24 or ff02::/16).",
	"hostname":  "The Hostname of this endpoint",

}

// EndpointAddress is a tuple that describes single IP address.
// +structType=atomic
message EndpointAddress {
  // The IP of this endpoint.
  // May not be loopback (127.0.0.0/8 or ::1), link-local (169.254.0.0/16 or fe80::/10),
  // or link-local multicast (224.0.0.0/24 or ff02::/16).
  optional string ip = 1;

  // The Hostname of this endpoint
  // +optional

// is hard, so we approximate with 1 second. See golang.org/issue/18701.
//
// This is a var so it can be shorter in tests, where all requests uses the
// loopback interface making the expected RTT very small.
//
// TODO: configurable?
var http2goAwayTimeout = 1 * time.Second

func (sc *http2serverConn) startGracefulShutdownInternal() {
	sc.goAway(http2ErrCodeNo)