[    2.486562] ip (287) used greatest stack depth: 12360 bytes left
[    2.607183] ip (296) used greatest stack depth: 12344 bytes left
[   54.390657] netem: version 1.3
[   63.084816] ip (2384) used greatest stack depth: 12192 bytes left
[   72.036931] ip (2501) used greatest stack depth: 12064 bytes left