[    2.069312] ip (249) used greatest stack depth: 12368 bytes left
[    2.531318] ip (279) used greatest stack depth: 12320 bytes left
[   40.878392] ip (1494) used greatest stack depth: 12272 bytes left
[   56.029552] netem: version 1.3
[  605.833512] tc (11944) used greatest stack depth: 11832 bytes left