If memory serves me right, "Federico Krum" wrote:
> Is it possible to implement a way in monowall to bridge without inserting a
> NIC to take up the role of LAN ?
The way the code is written right now, LAN and WAN have to be numbered
interfaces, which means that they can't be bridged to each other. This
is why bridging requires three network interfaces.
Changing this would require a non-trivial amount of work.