I have an instance of Kamailio configured as an outbound proxy and I want to be able to hide the fact the a 3XX redirection result may have been encountered while attempting to route the call.  I am using the fragment below and it does appear to work, but I am wondering if there is a better way.

failure_route[MANAGE_FAILURE] {

    if (t_is_canceled()) {

        exit;

    }

    if (t_check_status("3[0-9][0-9]")) {

append_branch($(T_rpl($ct){nameaddr.uri}));

        route(RELAY);

        exit;

    }

}

Thanks.