[    2.112921] ip (257) used greatest stack depth: 12392 bytes left
[    2.562475] ip (285) used greatest stack depth: 12360 bytes left
[    7.340596] ip (592) used greatest stack depth: 12344 bytes left
[   56.222979] netem: version 1.3
[  609.458919] tc (12619) used greatest stack depth: 11936 bytes left