[    1.901520] ip (259) used greatest stack depth: 12392 bytes left
[    2.360628] ip (287) used greatest stack depth: 12360 bytes left
[    2.488105] ip (296) used greatest stack depth: 12344 bytes left
[    5.345838] ip (493) used greatest stack depth: 12160 bytes left
[   56.213958] netem: version 1.3