[    1.994604] ip (255) used greatest stack depth: 12384 bytes left
[    2.105142] ip (262) used greatest stack depth: 12336 bytes left
[   50.688381] netem: version 1.3
[  319.924747] ip (4687) used greatest stack depth: 12288 bytes left
[  591.084484] tc (11916) used greatest stack depth: 11872 bytes left