common_ancestor->getRouteAndLatency(src_ancestor->netcard_, dst_ancestor->netcard_, &route, latency);
xbt_assert((route.gw_src != NULL) && (route.gw_dst != NULL),
"bad gateways for route from \"%s\" to \"%s\"", src->name(), dst->name());
common_ancestor->getRouteAndLatency(src_ancestor->netcard_, dst_ancestor->netcard_, &route, latency);
xbt_assert((route.gw_src != NULL) && (route.gw_dst != NULL),
"bad gateways for route from \"%s\" to \"%s\"", src->name(), dst->name());