return msg, nil
}

func (s *CniPluginServer) ReconcileCNIAddEvent(ctx context.Context, addCmd CNIPluginAddEvent) error {
	log := log.WithLabels("cni-event", addCmd)

	log.Debugf("netns: %s", addCmd.Netns)

	// The CNI node plugin should have already checked the pod against the k8s API before forwarding us the event,

	assert.Equal(t, nlDeps.DelLoopbackRoutesCnt.Load(), 1)
	// make sure the uid was taken from cache and netns closed
	netns := fixture.podNsMap.Take(string(pod.UID))
	assert.Equal(t, nil, netns)

	// run gc to clean up ns:

	//revive:disable-next-line:call-to-gc Just a test that we are cleaning up the netns
	runtime.GC()
	assertNSClosed(t, closed)
}

	for _, ipc := range prevResIps {
		ncconfigs = append(ncconfigs, nodeagent.IPConfig{Interface: ipc.Interface, Address: ipc.Address, Gateway: ipc.Gateway})
	}
	// Currently we only use the netns from the original CNI event
	addEvent := nodeagent.CNIPluginAddEvent{Netns: event.Netns, PodName: podName, PodNamespace: podNamespace, IPs: ncconfigs}
	eventData, err := json.Marshal(addEvent)
	if err != nil {
		return err
	}

	"number of connections to ztunnel")

type ZtunnelServer interface {
	Run(ctx context.Context)
	PodDeleted(ctx context.Context, uid string) error
	PodAdded(ctx context.Context, pod *v1.Pod, netns Netns) error
	Close() error
}

/*
To clean up stale ztunnels

	we may need to ztunnel to send its (uid, bootid / boot time) to us
	so that we can remove stale entries when the ztunnel pod is deleted

		var msg nodeagent.CNIPluginAddEvent
		err = json.Unmarshal(data, &msg)
		assert.NoError(t, err)
		assert.Equal(t, msg.PodName, testPod)
		assert.Equal(t, msg.PodNamespace, testNS)
		assert.Equal(t, msg.Netns, fakeCmdArgs.Netns)
		res.WriteHeader(http.StatusOK)
		res.Write([]byte("server happy"))
	}))
	defer func() { testServer.Close() }()

	cniC := fakeCNIEventClient(testServer.URL)

	netns, err := runInHost(func() (string, error) { return getPodNetNs(pod) })
	if err != nil {
		m.With(resultLabel.Value(resultFail)).Increment()
		return fmt.Errorf("get netns: %v", err)
	}
	log = log.WithLabels("netns", netns)

	if err := redirectRunningPod(pod, netns); err != nil {
		log.Errorf("failed to setup redirection: %v", err)

var ErrNotImplemented = errors.New("not implemented")

// Program defines a method which programs iptables based on the parameters
// provided in Redirect.
func (ipt *iptables) Program(podName, netns string, rdrct *Redirect) error {
	return ErrNotImplemented

	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, isDelete bool) error

	Stop()
}

type Server struct {
	ctx        context.Context

package plugin

// InterceptRuleMgr configures networking tables (e.g. iptables or nftables) for
// redirecting traffic to an Istio proxy.
type InterceptRuleMgr interface {
	Program(podName, netns string, redirect *Redirect) error
}

// Constructor for iptables InterceptRuleMgr
func IptablesInterceptRuleMgr() InterceptRuleMgr {
	return newIPTables()

    - on pod add, determines whether pod should have netns setup to redirect to Istio proxy. See [cmdAdd](#cmdadd-workflow) for detailed logic.
        - it connects to K8S using the kubeconfig and JWT token copied from install-cni to get Pod and Namespace. Since this is a short-running command, each invocation creates a new connection.
        - If so, calls `istio-iptables` with params to setup pod netns
        - If ambient, sets up the ambient logic.