[    2.228711] ip (281) used greatest stack depth: 12352 bytes left
[    3.450581] ip (380) used greatest stack depth: 12336 bytes left
[   30.234266] ip (1231) used greatest stack depth: 12152 bytes left
[   52.185112] netem: version 1.3
[  584.742019] tc (11926) used greatest stack depth: 11920 bytes left