[    1.869179] ip (254) used greatest stack depth: 12392 bytes left
[    2.284962] ip (285) used greatest stack depth: 12344 bytes left
[    7.135533] ip (673) used greatest stack depth: 12192 bytes left
[   54.259250] netem: version 1.3
[  615.183338] tc (12615) used greatest stack depth: 11936 bytes left