[    1.995008] ip (250) used greatest stack depth: 12912 bytes left
[    2.035671] ip (253) used greatest stack depth: 12392 bytes left
[    2.374622] ip (273) used greatest stack depth: 12344 bytes left
[   56.727624] netem: version 1.3
[  599.725061] tc (12607) used greatest stack depth: 11896 bytes left