[    1.922779] ip (247) used greatest stack depth: 12392 bytes left
[    2.144668] ip (259) used greatest stack depth: 12344 bytes left
[    3.499710] ip (368) used greatest stack depth: 12296 bytes left
[   51.795443] netem: version 1.3
[  506.199844] ip (10550) used greatest stack depth: 12184 bytes left