ipnat(8) on FreeBSD
The text f8bd14df21a6, as FreeBSD 4.11-RELEASE, FreeBSD 4.10-RELEASE, FreeBSD 4.9-RELEASE, FreeBSD 4.8-RELEASE shipped it.
user interface to the NAT
Flags it lists
-
-C -
-F -
-l -
-n -
-r -
-s -
-v