[    2.498602] ip (278) used greatest stack depth: 12352 bytes left
[    9.026324] ip (752) used greatest stack depth: 12344 bytes left
[   38.230530] ip (1462) used greatest stack depth: 12200 bytes left
[   52.221859] netem: version 1.3
[  509.276846] ip (9221) used greatest stack depth: 12040 bytes left