[    1.591474] ip (248) used greatest stack depth: 12072 bytes left
[    1.617353] ip (257) used greatest stack depth: 11896 bytes left
[   52.569337] netem: version 1.3
[  110.427903] ip (5200) used greatest stack depth: 11872 bytes left
[  509.715687] tc (20910) used greatest stack depth: 11704 bytes left