[    2.124907] ip (250) used greatest stack depth: 12912 bytes left
[    2.344051] ip (262) used greatest stack depth: 12600 bytes left
[    2.509297] ip (272) used greatest stack depth: 12360 bytes left
[    2.692141] ip (281) used greatest stack depth: 12352 bytes left
[    3.596430] ip (341) used greatest stack depth: 12344 bytes left
[   53.935011] netem: version 1.3
[  655.735077] ip (14174) used greatest stack depth: 12296 bytes left