[    2.128457] ip (255) used greatest stack depth: 12392 bytes left
[    2.496018] ip (277) used greatest stack depth: 12360 bytes left
[    3.916232] ip (374) used greatest stack depth: 12064 bytes left
[   54.731963] netem: version 1.3
[  613.443452] tc (12618) used greatest stack depth: 11936 bytes left