RedirectPermanent is not working in mvc3

Question

What I am missing here?? It is not working. Thanks

public ActionResult GotoFacebook()
    {
        return RedirectPermanent("www.facebook.com");
    }

I have tried it also

public ActionResult GotoFacebook()
        {
            return Redirect("www.facebook.com");
        }

Answer 1

You are missing http://

return RedirectPermanent("http://www.facebook.com");