[    1.330942] ip (218) used greatest stack depth: 12216 bytes left
[    1.351519] ip (223) used greatest stack depth: 12104 bytes left
[   50.050747] ip (3785) used greatest stack depth: 11896 bytes left
[   52.094516] netem: version 1.3
[  506.495252] tc (20913) used greatest stack depth: 11704 bytes left