[    2.037344] ip (276) used greatest stack depth: 12360 bytes left
[    2.136929] ip (285) used greatest stack depth: 12344 bytes left
[    3.106585] ip (365) used greatest stack depth: 12192 bytes left
[   56.006635] netem: version 1.3
[  591.270522] tc (12615) used greatest stack depth: 11936 bytes left