[    2.595268] ip (238) used greatest stack depth: 12592 bytes left
[    2.610086] ip (244) used greatest stack depth: 12544 bytes left
[    3.162425] ip (384) used greatest stack depth: 12096 bytes left
[    3.800547] ip (563) used greatest stack depth: 12088 bytes left
[   12.374147] ip (1542) used greatest stack depth: 12056 bytes left
[   52.028254] netem: version 1.3
[  541.360332] pm_nl_ctl (24683) used greatest stack depth: 11856 bytes left