[    1.738983] ip (258) used greatest stack depth: 12152 bytes left
[    2.127331] ip (294) used greatest stack depth: 11928 bytes left
[   13.367424] ip (1484) used greatest stack depth: 11912 bytes left
[   81.934471] netem: version 1.3
[  641.863781] tc (26292) used greatest stack depth: 11864 bytes left