[    1.769778] ip (249) used greatest stack depth: 12576 bytes left
[    1.959558] ip (261) used greatest stack depth: 12568 bytes left
[    2.063120] ip (271) used greatest stack depth: 12320 bytes left
[   52.379395] netem: version 1.3
[   70.132820] ip (2375) used greatest stack depth: 12048 bytes left