[    2.619571] ip (277) used greatest stack depth: 12360 bytes left
[    2.752170] ip (286) used greatest stack depth: 12344 bytes left
[    9.648292] ip (694) used greatest stack depth: 12064 bytes left
[   58.934601] netem: version 1.3
[  390.395314] ip (6427) used greatest stack depth: 12032 bytes left