[    1.966396] ip (252) used greatest stack depth: 12464 bytes left
[    2.061329] ip (257) used greatest stack depth: 12400 bytes left
[    2.314471] ip (273) used greatest stack depth: 12352 bytes left
[   55.810796] netem: version 1.3
[  586.299629] tc (11939) used greatest stack depth: 11936 bytes left