[    3.893605] ip (392) used greatest stack depth: 12360 bytes left
[    6.628704] ip (592) used greatest stack depth: 12344 bytes left
[   55.037484] netem: version 1.3
[  148.425312] ip (3255) used greatest stack depth: 12304 bytes left
[  558.072921] ip (11479) used greatest stack depth: 12064 bytes left