[    1.677132] ip (249) used greatest stack depth: 12368 bytes left
[    1.998194] ip (279) used greatest stack depth: 12320 bytes left
[    2.080614] ip (288) used greatest stack depth: 12032 bytes left
[   47.181931] netem: version 1.3
[  233.546081] ip (4040) used greatest stack depth: 12016 bytes left
[  538.250834] tc (11918) used greatest stack depth: 11872 bytes left