- one end of the socket is in the application pod
- and the other end is in ztunnel's pod

and setting up iptables rules to funnel traffic thru that socket "tube" to ztunnel and back.

This effectively behaves like ztunnel is an in-pod sidecar, without actually requiring the injection of ztunnel as a sidecar into the pod manifest, or mutatating the application pod in any way.

	log := log.WithLabels("ns", pod.Namespace, "name", pod.Name)
	log.Debug("Pod is now stopped... cleaning up.")

	if err := removePodFromHostNSIpset(pod, &s.hostsideProbeIPSet); err != nil {
		log.Errorf("failed to remove pod %s from host ipset, error was: %v", pod.Name, err)
		return err
	}

	log.Info("in pod mode - deleting pod from ztunnel")

func (s *InformerHandlers) GetAmbientPods() []*corev1.Pod {
	var pods []*corev1.Pod
	for _, pod := range s.pods.List(metav1.NamespaceAll, klabels.Everything()) {
		ns := s.namespaces.Get(pod.Namespace, "")
		if ns == nil {
			log.Warnf("failed to find namespace %s for pod %s", pod.Namespace, pod.Name)
		}

		if !util.IsZtunnelPod(s.systemNamespace, pod) && util.PodRedirectionEnabled(ns, pod) {
			pods = append(pods, pod)
		}
	}

	pod := &corev1.Pod{
		ObjectMeta: metav1.ObjectMeta{
			Name:      "test",
			Namespace: "test",
		},
		Spec: corev1.PodSpec{
			NodeName: "derp",
		},
		Status: corev1.PodStatus{
			PodIP:  "2.2.2.2",
			PodIPs: []corev1.PodIP{{IP: "2.2.2.2"}, {IP: "3.3.3.3"}},
		},
	}

	podIPs := GetPodIPsIfPresent(pod)
	assert.Equal(t, len(podIPs), 2)
}

func TestGetPodIPsIfNoPodIPPresent(t *testing.T) {
	pod := &corev1.Pod{

	ConstructInitialSnapshot(ambientPods []*corev1.Pod) error
	Start(ctx context.Context)

	//	IsPodInMesh(ctx context.Context, pod *metav1.ObjectMeta, netNs string) (bool, error)
	AddPodToMesh(ctx context.Context, pod *corev1.Pod, podIPs []netip.Addr, netNs string) error
	RemovePodFromMesh(ctx context.Context, pod *corev1.Pod) error
	DelPodFromMesh(ctx context.Context, pod *corev1.Pod) error

	Stop()
}

type Server struct {

    #
    # templates:
    #   hello: |
    #     metadata:
    #       labels:
    #         hello: world
    #
    # Then starting a pod with the `inject.istio.io/templates: hello` annotation, will result in the pod
    # being injected with the hello=world labels.
    # This is intended for advanced configuration only; most users should use the built in template
    templates: {}

* All traffic *egressing* a pod in the mesh should be redirected to the node-local ztunnel on port 15001.
  * It is critical that this path preserves the Service IP, if the traffic was to a Service.
* All traffic *ingressing* a pod on port 15008 in the mesh is assumed to be HBONE, and should be redirected to the node-local ztunnel on port 15008 (more on this later).

}

func TestCmdAddTwoContainersWithLabel(t *testing.T) {
	pod, ns := buildFakePodAndNSForClient()
	pod.Spec.Containers[0].Name = "mockContainer"
	pod.Spec.Containers[1].Name = "istio-proxy"
	pod.ObjectMeta.Annotations[label.SidecarInject.Name] = "false"

	testDoAddRun(t, buildMockConf(true, ""), testNSName, pod, ns)
}

func TestCmdAddTwoContainers(t *testing.T) {

    {{- else }}
      value: istiod{{- if not (eq .Values.revision "") }}-{{ .Values.revision }}{{- end }}.{{ .Values.global.istioNamespace }}.svc:15012
    {{- end }}
    - name: POD_NAME
      valueFrom:
        fieldRef:
          fieldPath: metadata.name
    - name: POD_NAMESPACE
      valueFrom:
        fieldRef:
          fieldPath: metadata.namespace
    - name: INSTANCE_IP
      valueFrom:
        fieldRef:

	mt.Assert(EventTotals.Name(), map[string]string{"type": "update"}, monitortest.AtLeast(4))

	waitForMockCalls()

	assertPodNotAnnotated(t, client, pod)

	// patch a test label to emulate a POD update event
	_, err = client.Kube().CoreV1().Pods(pod.Namespace).Patch(ctx, pod.Name,
		types.MergePatchType, []byte(`{"metadata":{"labels":{"test":"update"}}}`), metav1.PatchOptions{})