[    2.218282] ip (277) used greatest stack depth: 12360 bytes left
[    2.324344] ip (286) used greatest stack depth: 12344 bytes left
[   43.246306] ip (1929) used greatest stack depth: 12232 bytes left
[   54.869100] netem: version 1.3
[  605.302841] tc (12963) used greatest stack depth: 11936 bytes left