res->dst_gateway = xbt_strdup(e_route->dst_gateway);
xbt_dynar_foreach(e_route->link_list, cpt, link) {
xbt_dynar_push(res->link_list, &link);
res->dst_gateway = xbt_strdup(e_route->dst_gateway);
xbt_dynar_foreach(e_route->link_list, cpt, link) {
xbt_dynar_push(res->link_list, &link);