[    2.113125] ip (258) used greatest stack depth: 12392 bytes left
[    2.695198] ip (295) used greatest stack depth: 12360 bytes left
[    7.338290] ip (593) used greatest stack depth: 12344 bytes left
[   12.745150] ip (978) used greatest stack depth: 12160 bytes left
[   57.188921] netem: version 1.3
[  620.219895] tc (12965) used greatest stack depth: 11936 bytes left