[    1.939830] ip (254) used greatest stack depth: 12368 bytes left
[    2.259169] ip (279) used greatest stack depth: 12320 bytes left
[    8.653297] ip (749) used greatest stack depth: 12272 bytes left
[   40.710730] ip (1687) used greatest stack depth: 12048 bytes left
[   52.096167] netem: version 1.3
[  590.894148] tc (11916) used greatest stack depth: 11872 bytes left