[    1.410324] ip (221) used greatest stack depth: 12216 bytes left
[    1.501309] ip (253) used greatest stack depth: 12168 bytes left
[    2.079496] ip (398) used greatest stack depth: 11936 bytes left
[   51.217376] netem: version 1.3
[  525.642750] tc (20918) used greatest stack depth: 11760 bytes left