[    2.343299] ip (277) used greatest stack depth: 12360 bytes left
[    2.457457] ip (286) used greatest stack depth: 12344 bytes left
[   45.767873] ip (2012) used greatest stack depth: 12064 bytes left
[   56.457225] netem: version 1.3
[  624.572744] tc (12965) used greatest stack depth: 11936 bytes left