if (link.policy == SURF_LINK_FULLDUPLEX) {
char* tmp_link = bprintf("%s_UP", link_id);
linkUp = surf::LinkImpl::byName(tmp_link);
if (link.policy == SURF_LINK_FULLDUPLEX) {
char* tmp_link = bprintf("%s_UP", link_id);
linkUp = surf::LinkImpl::byName(tmp_link);