On Sat, 24 May 1997 14:06:49 -0500 (CDT) 
 "Tom T. Thai" <tomthai@future.net> wrote:

 > What I wanted was to use NetBSD as a router with one real IP as a gateway 
 > for other systems (win95, mac) that don't have real ips (internal use 
 > ones).  when a Mac wants to access the net, the NetBSD gateway would dial 
 > (if it uses a modem) or pass the info thru the dedicated line.

That is NAT, and you use ipnat(8) in -current (part of IPFilter)
or get the IPFilter package by Darren Reed for 1.2/1.2.1.

Jason R. Thorpe                                       thorpej@nas.nasa.gov
NASA Ames Research Center                               Home: 408.866.1912
NAS: M/S 258-6                                          Work: 415.604.0935
Moffett Field, CA 94035                                Pager: 415.428.6939