[    2.090693] ip (248) used greatest stack depth: 12392 bytes left
[    2.569670] ip (278) used greatest stack depth: 12352 bytes left
[   12.510202] ip (942) used greatest stack depth: 12344 bytes left
[   54.614019] netem: version 1.3
[  140.494545] ip (3065) used greatest stack depth: 12200 bytes left