If you disable NAT and setup appropriate static routing on the 10.0.0.0 network, this will work fine.
How do I do that, especially I need this kind of setup:
PC(10.20.2.109)------------->monowall-LAN(10.20.2.110),OPT1(10.20.2.111)wlan(bss mode)----------->router(10.20.2.1)
So what routes do I need to enter?