[    2.131585] ip (279) used greatest stack depth: 12320 bytes left
[    5.441408] ip (547) used greatest stack depth: 12224 bytes left
[    6.820721] ip (658) used greatest stack depth: 12160 bytes left
[   51.213487] netem: version 1.3
[  570.233981] tc (11908) used greatest stack depth: 11872 bytes left