[    1.390353] ip (215) used greatest stack depth: 12216 bytes left
[    1.504187] ip (247) used greatest stack depth: 12008 bytes left
[   28.096545] ip (2093) used greatest stack depth: 11936 bytes left
[   51.311992] netem: version 1.3
[  539.618607] pm_nl_ctl (24810) used greatest stack depth: 11856 bytes left