[    1.922958] ip (254) used greatest stack depth: 12392 bytes left
[    2.246486] ip (276) used greatest stack depth: 12360 bytes left
[    2.351720] ip (285) used greatest stack depth: 12344 bytes left
[    3.600998] ip (382) used greatest stack depth: 12304 bytes left
[   55.144769] netem: version 1.3
[  598.806498] ip (12303) used greatest stack depth: 12192 bytes left