[    1.639281] ip (254) used greatest stack depth: 12320 bytes left
[   31.793625] ip (1349) used greatest stack depth: 12224 bytes left
[   45.667384] netem: version 1.3
[  333.082426] ip (5638) used greatest stack depth: 12160 bytes left
[  476.795659] ip (10711) used greatest stack depth: 12000 bytes left