[    1.720979] ip (251) used greatest stack depth: 12368 bytes left
[    2.005861] ip (281) used greatest stack depth: 12320 bytes left
[    4.705361] ip (558) used greatest stack depth: 12240 bytes left
[   45.553137] netem: version 1.3
[   80.175589] ip (2468) used greatest stack depth: 12128 bytes left
[  546.590200] tc (11919) used greatest stack depth: 11824 bytes left