[    1.856566] ip (250) used greatest stack depth: 12392 bytes left
[    2.333452] ip (289) used greatest stack depth: 12360 bytes left
[    5.987247] ip (569) used greatest stack depth: 12344 bytes left
[   54.732787] netem: version 1.3
[  553.567115] ip (10969) used greatest stack depth: 12296 bytes left
[  580.280229] ip (11412) used greatest stack depth: 12200 bytes left