[    1.419754] ip (220) used greatest stack depth: 12152 bytes left
[    1.506828] ip (246) used greatest stack depth: 12120 bytes left
[    2.774188] ip (557) used greatest stack depth: 11896 bytes left
[   52.495006] netem: version 1.3
[  496.883579] tc (20912) used greatest stack depth: 11704 bytes left