[    1.764759] ip (249) used greatest stack depth: 12592 bytes left
[    2.023992] ip (270) used greatest stack depth: 12560 bytes left
[    2.109362] ip (279) used greatest stack depth: 12320 bytes left
[    6.770490] ip (654) used greatest stack depth: 12256 bytes left
[   48.462582] netem: version 1.3