@VooDoo
Even if it is possible (and I'm not sure it is, i.e. I'm not sure Roadshow can handle two netinterfaces running at the same time), it is a messy and complicated solution.
Get a switch instead and make both the A1 and the A1200 regular nodes on your LAN. It's a much cleaner solution, and a switch doesn't cost much these days. You will even have several extra ports available for visitors etc. afterwards.
Random example found in Google:
http://www.play.com/PC/PCs/-/660/867/ ... uct.html?searchtype=genreThere are many fine ones at similar prices. You just hook it up to one of your router's Ethernet ports, and then you can hook up all your computers, including the A1200, to the remaining ports on either the router or the switch, whichever is more convenient. If you run out of ports one day, just get one more switch and daisy-chain it off either of the other two units.
Best regards,
Niels