[    1.894513] ip (260) used greatest stack depth: 12392 bytes left
[    2.155829] ip (286) used greatest stack depth: 12168 bytes left
[    3.209787] ip (409) used greatest stack depth: 12088 bytes left
[   74.708257] netem: version 1.3
[  650.842643] tc (20918) used greatest stack depth: 11864 bytes left