[    1.822431] ip (250) used greatest stack depth: 12640 bytes left
[    1.851992] ip (253) used greatest stack depth: 12400 bytes left
[    2.111261] ip (273) used greatest stack depth: 12368 bytes left
[    4.702011] ip (489) used greatest stack depth: 12352 bytes left
[    8.131245] ip (781) used greatest stack depth: 12200 bytes left
[   53.310157] netem: version 1.3