)

	if redirectDNS {
		// CLI: -A ISTIO_OUTPUT ! -o lo -p udp -m udp --dport 53 -j REDIRECT --to-port 15053
		//
		// DESC: If this is a UDP DNS request to a non-localhost resolver, send it to ztunnel DNS proxy port
		iptablesBuilder.AppendRule(
			iptableslog.UndefinedCommand, ChainInpodOutput, iptablesconstants.NAT,
			"!", "-o", "lo",
			"-p", "udp",
			"-m", "mark", "!",
			"--mark", inpodMark,
			"-m", "udp",

          port: 80
          protocol: TCP
kind: List
metadata:
  resourceVersion: ""`
	udpService = `
kind: Service
metadata:
  name: hello
spec:
  ports:
    -
      protocol: udp`
	skippedService = `
kind: Service
metadata:
  name: hello
  namespace: istio-system
spec:
  ports:
    -
      name: http
      port: 9080`
	validPortNamingSvc = `
apiVersion: v1

message IngressPortStatus {
  // port is the port number of the ingress port.
  optional int32 port = 1;

  // protocol is the protocol of the ingress port.
  // The supported values are: "TCP", "UDP", "SCTP"
  optional string protocol = 2;

  // error is to record the problem with the service port
  // The format of the error shall comply with the following rules:

message IngressPortStatus {
  // port is the port number of the ingress port.
  optional int32 port = 1;

  // protocol is the protocol of the ingress port.
  // The supported values are: "TCP", "UDP", "SCTP"
  optional string protocol = 2;

  // error is to record the problem with the service port
  // The format of the error shall comply with the following rules:

   '--filename=rsrc.json'`)

	validFields = map[string]struct{}{
		"apiVersion": {},
		"kind":       {},
		"metadata":   {},
		"spec":       {},
		"status":     {},
	}

	serviceProtocolUDP = "UDP"

	fileExtensions = []string{".json", ".yaml", ".yml"}
)

type validator struct{}

func checkFields(un *unstructured.Unstructured) error {
	var errs error
	for key := range un.Object {

				Port:     80,
			},
			expectedProtocol: "auto-detect",
		},
		{
			port: corev1.ServicePort{
				Protocol: corev1.ProtocolUDP,
				Port:     80,
			},
			expectedProtocol: "UDP",
		},
		{
			port: corev1.ServicePort{
				Protocol:    corev1.ProtocolTCP,
				Port:        15008,
				Name:        "mesh",
				AppProtocol: &hbone,
			},
			expectedProtocol: "HBONE",

## Goals

Ztunnel should:
* **Not break users**. This means that deploying Ztunnel should retain all existing Kubernetes behavior.
  * This includes UDP, non-compliant HTTP, server-first protocols, stateful sets, external services, etc.
  * Explicitly opting into behavioral changes can be acceptable. For example, introducing Istio multi-cluster semantics.

message IngressPortStatus {
  // Port is the port number of the ingress port.
  optional int32 port = 1;

  // Protocol is the protocol of the ingress port.
  // The supported values are: "TCP", "UDP", "SCTP"
  optional string protocol = 2;

  // Error is to record the problem with the service port
  // The format of the error shall comply with the following rules:

* Fix unintended change of Service.spec.ports[].nodePort during kubectl apply ([#24180](https://github.com/kubernetes/kubernetes/pull/24180), [@AdoHe](https://github.com/AdoHe))
* Flush conntrack state for removed/changed UDP Services ([#22573](https://github.com/kubernetes/kubernetes/pull/22573), [@freehan](https://github.com/freehan))