[    2.147611] ip (254) used greatest stack depth: 12368 bytes left
[    2.494531] ip (279) used greatest stack depth: 12320 bytes left
[   54.506723] netem: version 1.3
[  288.429737] ip (4570) used greatest stack depth: 12272 bytes left
[  576.366154] tc (11935) used greatest stack depth: 11872 bytes left