[    1.727507] ip (251) used greatest stack depth: 12592 bytes left
[    1.988982] ip (272) used greatest stack depth: 12528 bytes left
[    2.058892] ip (279) used greatest stack depth: 12448 bytes left
[    2.079301] ip (281) used greatest stack depth: 12320 bytes left
[   27.506212] ip (1203) used greatest stack depth: 12176 bytes left
[   48.201045] netem: version 1.3
[  419.365231] ip (7708) used greatest stack depth: 12032 bytes left
[  484.434926] ip (10559) used greatest stack depth: 12016 bytes left