[    2.119927] ip (255) used greatest stack depth: 12392 bytes left
[    2.610444] ip (286) used greatest stack depth: 12344 bytes left
[   56.152163] netem: version 1.3
[  340.496808] ip (5765) used greatest stack depth: 12240 bytes left
[  587.676034] tc (12618) used greatest stack depth: 11936 bytes left