func (o *KubeOptions) prepare(ctx cli.Context) {
	o.Namespace = ctx.Namespace()
	if o.Namespace == "" {
		o.Namespace = ctx.IstioNamespace()

		configAccess := clientcmd.NewDefaultPathOptions()
		configAccess.GlobalFile = o.Kubeconfig
		if config, err := configAccess.GetStartingConfig(); err == nil {
			if context, ok := config.Contexts[config.CurrentContext]; ok && context.Namespace != "" {

	if r.defaultNamespace == "" {
		r.configureDefaultNamespace()
	}
	return r.defaultNamespace
}

func (r *RootFlags) configureDefaultNamespace() {
	configAccess := clientcmd.NewDefaultPathOptions()

	kubeconfig := *r.kubeconfig
	if kubeconfig != "" {
		// use specified kubeconfig file for the location of the
		// config to read
		configAccess.GlobalFile = kubeconfig
	}