[    1.988119] ip (279) used greatest stack depth: 12320 bytes left
[   15.560585] ip (1035) used greatest stack depth: 12272 bytes left
[   27.810924] ip (1233) used greatest stack depth: 12048 bytes left
[   46.410792] netem: version 1.3
[  551.255446] tc (11911) used greatest stack depth: 11872 bytes left