xbt_assert(netpoint, "Host '%s' not found!", hostlink->id.c_str());
xbt_assert(dynamic_cast<simgrid::kernel::routing::ClusterZone*>(current_routing),
"Only hosts from Cluster and Vivaldi ASes can get a host_link.");
xbt_assert(netpoint, "Host '%s' not found!", hostlink->id.c_str());
xbt_assert(dynamic_cast<simgrid::kernel::routing::ClusterZone*>(current_routing),
"Only hosts from Cluster and Vivaldi ASes can get a host_link.");