[    1.981828] ip (254) used greatest stack depth: 12392 bytes left
[    2.437832] ip (285) used greatest stack depth: 12344 bytes left
[   11.053474] ip (893) used greatest stack depth: 12064 bytes left
[   58.975523] netem: version 1.3
[  614.002355] tc (12959) used greatest stack depth: 11936 bytes left