[    2.223661] ip (254) used greatest stack depth: 12456 bytes left
[    2.630302] ip (276) used greatest stack depth: 12360 bytes left
[    2.921062] ip (294) used greatest stack depth: 12344 bytes left
[   61.253863] netem: version 1.3
[  391.311158] ip (6094) used greatest stack depth: 12192 bytes left
[  511.902347] ip (8971) used greatest stack depth: 12064 bytes left