[    1.957130] ip (253) used greatest stack depth: 12400 bytes left
[    2.304621] ip (278) used greatest stack depth: 12368 bytes left
[    2.412420] ip (287) used greatest stack depth: 12352 bytes left
[   37.310443] ip (1345) used greatest stack depth: 12200 bytes left
[   53.599678] netem: version 1.3