[    1.881265] ip (267) used greatest stack depth: 12520 bytes left
[    1.929046] ip (273) used greatest stack depth: 12456 bytes left
[    2.028549] ip (286) used greatest stack depth: 12344 bytes left
[    2.103536] ip (295) used greatest stack depth: 12168 bytes left
[    2.977042] ip (410) used greatest stack depth: 12088 bytes left
[   73.377652] netem: version 1.3
[  649.866577] tc (20921) used greatest stack depth: 11864 bytes left