Sorry, I know this seems trivial but I have setup a  secondary interface 
on a m0n0wall box, and having little success in creating the proper 
firewall rules.
I have duplicated (almost except the two fields where I switched LAN 
with OPT1) the default rule for the LAN interface, as well as tried to 
simply bridge the connections. No matter what I try, the OPT1 interface 
acts up, and the firewall log show numerous blocked packets, but only 
when using the OPT1 interface.

What am I missing?

-S.