If memory serves me right, Bart Smit wrote:

[bridging and NAT-ing on the same m0n0wall box]

> Now if I have a server 123.45.1.3 and I put it in the WAN I can connect 
> to it from both LAN and DMZ fine, but as soon as I put it in the DMZ I 
> cannot connect to it from the LAN anymore. Connecting from WAN is, as 
> expected, no problem.

ipnat and the FreeBSD bridge(4) driver don't play well together, which
I just confirmed first-hand this morning.  :-p

I managed to convince myself that fixing this would be Really Really
Hard (TM).

Bruce.