[    2.229618] ip (277) used greatest stack depth: 12360 bytes left
[    3.772234] ip (393) used greatest stack depth: 12344 bytes left
[   53.265731] netem: version 1.3
[   85.794035] ip (2644) used greatest stack depth: 12192 bytes left
[  485.701086] ip (8981) used greatest stack depth: 12064 bytes left
[  592.976908] tc (12619) used greatest stack depth: 11936 bytes left