[    1.918741] ip (259) used greatest stack depth: 12392 bytes left
[    2.024438] ip (267) used greatest stack depth: 12296 bytes left
[    2.305424] ip (294) used greatest stack depth: 12168 bytes left
[   77.066930] netem: version 1.3
[  637.585583] tc (20920) used greatest stack depth: 11864 bytes left