I have a mac68k machine running NetBSD 1.6.  My external interface ae0 
is configured by dhclient.  ae1 and ae2 are internal interfaces 
configured as 192.168.0.1 and 192.168.1.1 respectively.  ipnat.conf is 
as follows:

map ae0 192.168.0.0/16 -> 0/32 proxy port ftp ftp/tcp
map ae0 192.168.0.0/16 -> 0/32 portmap tcp/udp 40000:60000
map ae0 192.168.0.0/16 -> 0/32

Everything works great.

I'm running Apache on another machine configured as 192.168.0.2.  I'd 
like to redirect http requests to the machine running ipnat to the Web 
server at 192.168.0.2.  I've read over documentation and searched the 
mailing list.  Based on this research,  I added the following line to 
ipnat.conf:

rdr ae0 0/0 port 80 -> 192.168.0.2 port 80 tcp

Unfortunately, any http request to the mac68k machine returns 
"connection refused" or "page cannot be displayed" depending on the Web 
browser.  Internal http requests direct to the machine running Apache 
connect successfully.

Have I correctly configured ipnat for this purpose?  Is there anything 
else I need to do?

Thanks in advance,

Rob
~
Even if one were skilled enough to play to the apple, one would have 
only seconds left to diagnose the circuit before being eaten, "with a 
joystick in one hand and a logic probe in the other."