[    1.780696] ip (251) used greatest stack depth: 12400 bytes left
[    2.251035] ip (290) used greatest stack depth: 12368 bytes left
[    3.339196] ip (380) used greatest stack depth: 12312 bytes left
[   53.544253] netem: version 1.3
[  594.479967] ip (12184) used greatest stack depth: 12072 bytes left