我该如何映射只忽略部分路径的asp.net mvc路由

Question

我希望所有对http://foo.com/test/ {the-rest-of-url}的请求都映射到http://foo.com/ {the-rest-of-url}

像这样...

        routes.MapRoute(
            name: "Test",
            url: "test/{controller}/{action}/{id}",
            defaults: new { controller = "Channel", action = "Index", id = UrlParameter.Optional }
        );

但是那当然没有用。