[    1.356318] ip (218) used greatest stack depth: 12216 bytes left
[    1.479494] ip (259) used greatest stack depth: 12008 bytes left
[   16.805846] ip (1712) used greatest stack depth: 11960 bytes left
[   51.108086] netem: version 1.3
[  507.996691] tc (21120) used greatest stack depth: 11784 bytes left