Apache2::Cookie->new
      ( $r,
        -name  => 'user_login',
        -value => { user_id => $ARGS{username}, MAC => $MAC },
        -path  => '/',
        -domain  => 'ruth.dobson.net',
        -expires => '+1M',
      )->bake($r);

$url= "/test.html";
$m->redirect($url);