[    1.736926] ip (249) used greatest stack depth: 12592 bytes left
[    1.892359] ip (261) used greatest stack depth: 12528 bytes left
[    1.957590] ip (268) used greatest stack depth: 12448 bytes left
[    2.062066] ip (279) used greatest stack depth: 12320 bytes left
[   39.965361] ip (1883) used greatest stack depth: 12128 bytes left
[   48.013425] netem: version 1.3
[  552.057916] tc (11925) used greatest stack depth: 11872 bytes left