[    2.141880] ip (256) used greatest stack depth: 12392 bytes left
[    2.372741] ip (272) used greatest stack depth: 12360 bytes left
[    2.583197] ip (290) used greatest stack depth: 12344 bytes left
[    6.874366] ip (575) used greatest stack depth: 12072 bytes left
[   53.751206] netem: version 1.3