[    1.770456] ip (255) used greatest stack depth: 12400 bytes left
[    2.257846] ip (292) used greatest stack depth: 12352 bytes left
[   54.485776] netem: version 1.3
[  466.125599] ip (8268) used greatest stack depth: 12296 bytes left
[  605.923103] tc (12613) used greatest stack depth: 11936 bytes left