Might be bug in creat more than one link between two nodes

[Needleman9]

If I want to creat 4 links between 1 leaf switch and 1 spine switch, what should I write in the topology.txt? If I write like: 0 8 100Gbps 0.001ms 0 0 8 100Gbps 0.001ms 0 0 8 100Gbps 0.001ms 0 0 8 100Gbps 0.001ms 0 The flows will only be transported on the forth link (if these links have different bandwith, problem still happened), which might means between two nodes , the simulator will only counting the final link in the topology.txt, or it isn't the right way to creat multi links between two nodes (how to make it?).