[    2.039563] ip (270) used greatest stack depth: 12320 bytes left
[   49.703912] netem: version 1.3
[  354.958474] ip (6393) used greatest stack depth: 12272 bytes left
[  410.721363] ip (7712) used greatest stack depth: 12160 bytes left
[  546.167821] ip (12452) used greatest stack depth: 12048 bytes left