[    1.407613] ip (216) used greatest stack depth: 12216 bytes left
[    1.429186] ip (221) used greatest stack depth: 12152 bytes left
[    1.495259] ip (238) used greatest stack depth: 11896 bytes left
[   52.404919] netem: version 1.3
[  503.824005] tc (20915) used greatest stack depth: 11704 bytes left