[    2.539771] ip (268) used greatest stack depth: 12648 bytes left
[    2.805154] ip (286) used greatest stack depth: 12344 bytes left
[   65.067210] ip (2355) used greatest stack depth: 12192 bytes left
[   65.671436] netem: version 1.3
[  620.563322] tc (12964) used greatest stack depth: 11936 bytes left