[    1.436427] ip (218) used greatest stack depth: 12152 bytes left
[    2.784719] ip (559) used greatest stack depth: 11928 bytes left
[   52.282518] netem: version 1.3
[   68.507415] ip (4655) used greatest stack depth: 11896 bytes left
[  509.530493] tc (20899) used greatest stack depth: 11680 bytes left