[    2.123422] ip (251) used greatest stack depth: 12400 bytes left
[    2.651725] ip (281) used greatest stack depth: 12368 bytes left
[    2.783992] ip (290) used greatest stack depth: 12352 bytes left
[   11.191143] ip (842) used greatest stack depth: 12200 bytes left
[   53.953287] netem: version 1.3