[    2.225500] ip (272) used greatest stack depth: 12320 bytes left
[    2.448192] ip (290) used greatest stack depth: 12208 bytes left
[    6.197542] ip (566) used greatest stack depth: 12160 bytes left
[   52.268026] netem: version 1.3
[  603.858834] tc (11921) used greatest stack depth: 11872 bytes left