-$ ./ns3-simultaneous-send-rcv ${platfdir}/ns3-big-cluster.xml --cfg=network/model:ns-3
-> [0.000000] [xbt_cfg/INFO] Configuration change: Set 'network/model' to 'ns-3'
-> [c-01.rennes:receiver:(1) 22.000199] [s4u_test/INFO] Done receiving from 100 senders, each of them sending 5 messages
+$ ./ns3-simultaneous-send-rcv ${platfdir}/ns3-big-cluster.xml --cfg=network/model:ns-3 "--log=root.fmt:[%h:%a(%i)]%e[%c/%p]%e%m%n"
+> [:maestro(0)] [xbt_cfg/INFO] Configuration change: Set 'network/model' to 'ns-3'
+> [c-01.rennes:receiver(1)] [s4u_test/INFO] Done receiving from 100 senders, each of them sending 5 messages