uif(8) on Linux
The text 6928a510ea7a, as Debian 9 (Stretch) shipped it.
Tool for generating optimized packetfilter rules
Flags it lists
-
-6 -
-C -
-D -
-R -
-T -
-W -
-b -
-c -
-d -
-p -
-r -
-s -
-t -
-w