[    1.995432] ip (252) used greatest stack depth: 12392 bytes left
[    2.320980] ip (274) used greatest stack depth: 12344 bytes left
[   42.256265] ip (1792) used greatest stack depth: 12288 bytes left
[   53.524338] netem: version 1.3
[  605.418294] tc (12616) used greatest stack depth: 11936 bytes left