[    1.935945] ip (254) used greatest stack depth: 12392 bytes left
[    2.242879] ip (276) used greatest stack depth: 12360 bytes left
[    7.445367] ip (682) used greatest stack depth: 12304 bytes left
[   10.010037] ip (893) used greatest stack depth: 12192 bytes left
[   53.542784] netem: version 1.3
[  581.118711] tc (12617) used greatest stack depth: 11936 bytes left