// Start UDS log server
	udsSockDir := t.TempDir()
	udsSock := filepath.Join(udsSockDir, "cni.sock")
	logger := NewUDSLogger()
	pluginLog.SetOutputLevel(log.DebugLevel) // this will be configured by global.logging.level
	stop := make(chan struct{})
	defer close(stop)
	assert.NoError(t, logger.StartUDSLogServer(udsSock, stop))

	// Configure log to tee to UDS server
	stdout := os.Stdout
	r, w, _ := os.Pipe()
	os.Stdout = w

	var envPreconf string
	if preConfFile != "" {
		envPreconf = preConfFile
	} else {
		preConfFile = resultFileName
	}
	setEnv(cniNetworkConfigName, cniNetworkConfig, t)

	// disable monitoring & uds logging
	viper.Set(constants.MonitoringPort, 0)
	viper.Set(constants.LogUDSAddress, "")
	viper.Set(constants.RepairEnabled, false)

	ctx, cancel := context.WithCancel(context.Background())
	wg := sync.WaitGroup{}

)

var log = istiolog.RegisterScope("iptables", "iptables helper")

type Config struct {
	RestoreFormat bool `json:"RESTORE_FORMAT"`
	TraceLogging  bool `json:"IPTABLES_TRACE_LOGGING"`
	EnableIPv6    bool `json:"ENABLE_INBOUND_IPV6"`
	RedirectDNS   bool `json:"REDIRECT_DNS"`
}

type IptablesConfigurator struct {
	ext    dep.Dependencies
	nlDeps NetlinkDependencies
	cfg    *Config

		Short: "Manage istiod logging.",
		Long:  "Retrieve or update logging levels of istiod components.",
		Example: `  # Retrieve information about istiod logging levels.
  istioctl admin log

  # Retrieve information about istiod logging levels on a specific control plane pod.
  istioctl admin l istiod-5c868d8bdd-pmvgg

)

const (
	// OffLevel disables logging
	OffLevel Level = iota
	// CriticalLevel enables critical level logging
	CriticalLevel
	// ErrorLevel enables error level logging
	ErrorLevel
	// WarningLevel enables warning level logging
	WarningLevel
	// InfoLevel enables info level logging
	InfoLevel
	// DebugLevel enables debug level logging
	DebugLevel
	// TraceLevel enables trace level logging

	IstioConfig = env.Register("ISTIOCONFIG", defaultIstioctlConfig,
		"Default values for istioctl flags").Get()

	LoggingOptions = defaultLogOptions()

	// scope is for dev logging.  Warning: log levels are not set by --log_output_level until command is Run().
	Scope = log.RegisterScope("cli", "istioctl")
)

func defaultLogOptions() *log.Options {
	o := log.DefaultOptions()

	// Whether to install CNI plugin as a chained or standalone
	ChainedCNIPlugin bool

	// CNI config template file
	CNINetworkConfigFile string
	// CNI config template string
	CNINetworkConfig string

	// Logging level
	LogLevel string
	// Name of the kubeconfig file used by the CNI plugin
	KubeconfigFilename string
	// The file mode to set when creating the kubeconfig file
	KubeconfigMode int
	// CA file for kubeconfig

			wantException:  true, // "istioctl proxy-config listeners invalid" should fail
		},
		{ // logging empty
			args:           strings.Split("log", " "),
			expectedString: "Error: log requires pod name or --selector",
			wantException:  true, // "istioctl proxy-config logging empty" should fail
		},
		{ // logging invalid
			args:           strings.Split("log invalid", " "),

			expectedString:   "unrecognized logging level: pool:debug",
			wantException:    true,
		},
		{ // logger name valid and logging level valid
			execClientConfig: loggingConfig,
			args:             strings.Split("log ztunnel-9v7nw --level ztunnel::pool:debug", " "),
			expectedString:   "",
			wantException:    false,
		},
		{ // set ztunnel logging level
			execClientConfig: loggingConfig,

)

const (
	// OffLevel disables logging
	OffLevel Level = iota
	// CriticalLevel enables critical level logging
	CriticalLevel
	// ErrorLevel enables error level logging
	ErrorLevel
	// WarningLevel enables warning level logging
	WarningLevel
	// InfoLevel enables info level logging
	InfoLevel
	// DebugLevel enables debug level logging
	DebugLevel
	// TraceLevel enables trace level logging