[    1.834112] ip (255) used greatest stack depth: 12392 bytes left
[    2.220302] ip (287) used greatest stack depth: 12344 bytes left
[   39.324861] ip (1795) used greatest stack depth: 12160 bytes left
[   51.416295] netem: version 1.3
[  614.257384] tc (12964) used greatest stack depth: 11936 bytes left