kohana routing not working properly

I run 开发者_JAVA百科with this default routing:

Route::set('default', '(<controller>(/<action>(/<id>)))')
    ->defaults(array(
        'controller' => 'welcome',
        'action'     => 'index',
    ));

Now i have set up user/index and user/login, by:

Class Controller_User extends Controller {

        public function action_index()
        {
        #stuff
        }
        public function action_login(){
         # stuff
        }

Now i have another controller right now called class Controller_Restaurants. I can access this by restaurants/index, restaurants/view . I would like to access this as: user/restaurants/index, user/restaurants/view

I have this at the moment:

Class Controller_Restaurants extends Controller{

I tried with this:

Class Controller_User_Restaurans extends Controller{

But it does not work.. What have i missed?

Route::set('restaurants', 'user/restaurants(/<action>)')
->defaults(array(
    'controller' => 'restaurants',
    'action'     => 'index',
));

I'd advise against using the default route, and build better, more meaningful specific routes.