[    1.695547] ip (250) used greatest stack depth: 12368 bytes left
[    2.011744] ip (280) used greatest stack depth: 12320 bytes left
[   49.118450] netem: version 1.3
[  188.079373] ip (3694) used greatest stack depth: 12048 bytes left
[  541.147469] tc (11908) used greatest stack depth: 11872 bytes left