[    1.911769] ip (254) used greatest stack depth: 12392 bytes left
[    2.324894] ip (286) used greatest stack depth: 12360 bytes left
[    2.426727] ip (295) used greatest stack depth: 12344 bytes left
[   31.163440] ip (1278) used greatest stack depth: 12192 bytes left
[   56.275496] netem: version 1.3