[   52.150244] netem: version 1.3
[   83.295365] ip (4810) used greatest stack depth: 12104 bytes left
[   83.412840] ip (4845) used greatest stack depth: 11920 bytes left
[   97.537876] ip (5032) used greatest stack depth: 11896 bytes left
[  119.136080] ip (5228) used greatest stack depth: 11872 bytes left
[  518.276051] tc (20924) used greatest stack depth: 11704 bytes left