[    2.234639] ip (277) used greatest stack depth: 12360 bytes left
[    2.343419] ip (286) used greatest stack depth: 12344 bytes left
[   55.478882] netem: version 1.3
[   97.108523] ip (2887) used greatest stack depth: 12192 bytes left
[  598.875379] tc (12965) used greatest stack depth: 11936 bytes left