[    1.547323] ip (256) used greatest stack depth: 12168 bytes left
[    2.834684] ip (566) used greatest stack depth: 11976 bytes left
[   52.520686] netem: version 1.3
[   97.511659] ip (5200) used greatest stack depth: 11872 bytes left
[  496.003517] tc (20912) used greatest stack depth: 11704 bytes left