[t=0.000,src=n0] Send 5 bytes to n1 on eth0
[t=3.300,src=esds] Hello Callback!
[t=6.600,src=esds] Hello Callback!
[t=9.900,src=esds] Hello Callback!
[t=13.200,src=esds] Hello Callback!
[t=16.500,src=esds] Hello Callback!
[t=19.800,src=esds] Hello Callback!
[t=20.000,src=n1] Receive 5 bytes on eth0
[t=20.000,src=esds] Simulation ends