[   13.064429][  T250] ip (250) used greatest stack depth: 24720 bytes left
[   13.656793][  T255] ip (255) used greatest stack depth: 24472 bytes left
[   15.881444][  T272] ip (272) used greatest stack depth: 23984 bytes left
[   31.365110][  T389] netem: version 1.3