[    1.787371] ip (256) used greatest stack depth: 12392 bytes left
[    2.149620] ip (287) used greatest stack depth: 12360 bytes left
[    2.249254] ip (296) used greatest stack depth: 12344 bytes left
[   51.714168] netem: version 1.3
[  605.497160] tc (12618) used greatest stack depth: 11936 bytes left