[    2.072392] ip (254) used greatest stack depth: 12392 bytes left
[    2.548452] ip (286) used greatest stack depth: 12360 bytes left
[    4.116574] ip (392) used greatest stack depth: 12304 bytes left
[   56.088216] netem: version 1.3
[  547.976218] ip (10926) used greatest stack depth: 12032 bytes left