for (auto host : simgrid::s4u::Engine::get_instance()->get_all_hosts()) {
const char* wifi_link = host->get_property("wifi_link");
const char* wifi_mcs = host->get_property("wifi_mcs");
for (auto host : simgrid::s4u::Engine::get_instance()->get_all_hosts()) {
const char* wifi_link = host->get_property("wifi_link");
const char* wifi_mcs = host->get_property("wifi_mcs");