net_bits = 128 if type(net) == IPv6Network else 32;
net_len = pow(2, net_bits - net.prefixlen)
start, end = int(net_len / 4 * 3), net_len
if net_len > 2000:
  start, end = 1000, 2000

[print(str(ip) + "/" + str(ip.max_prefixlen)) for ip in islice(ip_network('$CIDR').hosts(), start, end)]
EOF
}

function ips_to_cidrs() {
  IP_RANGE_START="$1"
  IP_RANGE_END="$2"
  python3 - <<EOF

			if err != nil {
				return fmt.Errorf("could not build port forwarder for ControlZ %s: %v", podName, err)
			}
			defer portForwarder.Close()
			err = portForwarder.Start()
			if err != nil {
				return fmt.Errorf("could not start port forwarder for ControlZ %s: %v", podName, err)
			}

			ctrlzClient := &ControlzClient{
				baseURL: &url.URL{
					Scheme: "http",
					Host:   portForwarder.Address(),

	waitTimeout time.Duration, l clog.Logger,
) error {
	// Needed in case we are running a test through this path that doesn't start a new process.
	cache.FlushObjectCaches()
	opts := &helmreconciler.Options{
		DryRun: dryRun, Log: l, WaitTimeout: waitTimeout, ProgressLog: progress.NewLog(),
		Force: force,
	}

					podPort = v.TargetPort.IntValue()
					break
				}
			}
			f, err := e.client.NewPortForwarder(pod.Name, pod.Namespace, "", 0, podPort)
			if err != nil {
				return nil, err
			}
			if err := f.Start(); err != nil {
				return nil, err
			}
			address = fmt.Sprintf("https://%s%s", f.Address(), *cc.Service.Path)
			defer func() {
				f.Close()
				f.WaitForStop()
			}()
		}

    spec:
      {{- if ge .KubeVersion 122 }}
      {{/* safe since 1.22: https://github.com/kubernetes/kubernetes/pull/103326. */}}
      securityContext:
        sysctls:
        - name: net.ipv4.ip_unprivileged_port_start
          value: "0"
      {{- end }}
      serviceAccountName: {{.ServiceAccount | quote}}
      containers:
      - name: istio-proxy

		currentPodSnapshot:   podNsMap,
		podNs:                podNs,
		iptablesConfigurator: iptablesConfigurator,
		netnsRunner:          NetnsDo,
		hostsideProbeIPSet:   probeSet,
	}
}

func (s *NetServer) Start(ctx context.Context) {
	log.Debug("starting ztunnel server")
	go s.ztunnelServer.Run(ctx)
}

func (s *NetServer) Stop() {
	log.Debug("removing host iptables rules")
	s.iptablesConfigurator.DeleteHostRules()

		"",
	).Return(nil)

	server := &meshDataplane{
		kubeClient: client.Kube(),
		netServer:  fs,
	}

	fs.Start(ctx)
	handlers := setupHandlers(ctx, client, server, "istio-system")
	client.RunAndWait(ctx.Done())
	go handlers.Start()

	// label the namespace
	labelsPatch := []byte(fmt.Sprintf(`{"metadata":{"labels":{"%s":"%s"}}}`,

		return
	}

	switch runtime.GOOS {
	case "linux":
		err = exec.Command("xdg-open", url).Start()
	case "windows":
		err = exec.Command("rundll32", "url.dll,FileProtocolHandler", url).Start()
	case "darwin":
		err = exec.Command("open", url).Start()
	default:
		fmt.Fprintf(writer, "Unsupported platform %q; open %s in your browser.\n", runtime.GOOS, url)
	}

	if err != nil {

	netServer := newNetServer(ztunnelServer, podNsMap, iptablesConfigurator, NewPodNetnsProcFinder(fakeFs()), set)

	netServer.netnsRunner = func(fdable NetnsFd, toRun func() error) error {
		return toRun()
	}
	netServer.Start(ctx)
	return netTestFixture{
		netServer:            netServer,
		podNsMap:             podNsMap,
		ztunnelServer:        ztunnelServer,
		iptablesConfigurator: iptablesConfigurator,
		nlDeps:               nlDeps,

		cmd.PrintFlags(c.Flags())
		ctx := c.Context()

		// Start controlz server
		_, _ = ctrlz.Run(ctrlzOptions, nil)

		var cfg *config.Config
		if cfg, err = constructConfig(); err != nil {
			return
		}
		log.Infof("CNI install configuration: \n%+v", cfg.InstallConfig)
		log.Infof("CNI race repair configuration: \n%+v", cfg.RepairConfig)

		// Start metrics server