[    2.130838] ip (253) used greatest stack depth: 12400 bytes left
[    2.601602] ip (281) used greatest stack depth: 12352 bytes left
[    6.956017] ip (579) used greatest stack depth: 12168 bytes left
[   58.125761] netem: version 1.3
[  615.042029] tc (12606) used greatest stack depth: 11896 bytes left