[    1.754653] ip (248) used greatest stack depth: 12368 bytes left
[    2.134910] ip (278) used greatest stack depth: 12320 bytes left
[    4.410909] ip (472) used greatest stack depth: 12128 bytes left
[   47.402379] netem: version 1.3
[  518.415859] ip (11403) used greatest stack depth: 12112 bytes left