[    2.306678] ip (275) used greatest stack depth: 12360 bytes left
[    3.757713] ip (381) used greatest stack depth: 12344 bytes left
[   10.830099] ip (884) used greatest stack depth: 12128 bytes left
[   54.485095] netem: version 1.3
[  617.359130] tc (12619) used greatest stack depth: 11936 bytes left