[    2.277698] ip (280) used greatest stack depth: 12320 bytes left
[   48.357655] netem: version 1.3
[   80.862716] ip (2609) used greatest stack depth: 12272 bytes left
[  349.030828] ip (6111) used greatest stack depth: 12160 bytes left
[  536.385384] tc (11912) used greatest stack depth: 11832 bytes left