[    1.724756] ip (255) used greatest stack depth: 12368 bytes left
[    2.034017] ip (280) used greatest stack depth: 12320 bytes left
[   51.012381] netem: version 1.3
[  551.791653] ip (10940) used greatest stack depth: 12016 bytes left
[  598.112185] tc (12078) used greatest stack depth: 11904 bytes left