[    2.361883] ip (274) used greatest stack depth: 12368 bytes left
[    2.477940] ip (283) used greatest stack depth: 12352 bytes left
[   38.373061] ip (1438) used greatest stack depth: 12200 bytes left
[   54.792390] netem: version 1.3
[  620.249554] tc (12614) used greatest stack depth: 11936 bytes left