softflowd(8) on Linux
The text 1d166148cc5f, as Debian 6.0 (Squeeze) shipped it.
Traffic flow monitoring
Flags it lists
-
-6 -
-D -
-L -
-T -
-c -
-d -
-h -
-i -
-m -
-n -
-p -
-r -
-t