[    2.391622] ip (288) used greatest stack depth: 12272 bytes left
[    9.130814] ip (894) used greatest stack depth: 12192 bytes left
[   54.422458] netem: version 1.3
[   61.420822] ip (3010) used greatest stack depth: 12112 bytes left
[  600.897634] tc (15595) used greatest stack depth: 11896 bytes left