For the life of me, I can't seem to get two m0n0wall boxes to talk to 
each other in IBSS mode.  I have this working with other equipment just 
fine, just not two m0n0wall boxes.

Does anyone have any tips?

m0n0 OPT2 IBSS x.x.x.21/30 <--> NetNimble x.x.x.22/30  (Works Perfect)
m0n0 OPT3 IBSS x.x.x.25/30 <--> m0n0 WAN IBSS x.x.x.26/30  (wont work 
at all)

Maybe I'm missing something with the routing or NAT or something.  I'm 
not sure.  I thought all I needed to do was assign it a IP and a 
gateway, set the SSID to the same as the other box and it should work?