Thingie - I don't follow the point of your post. Moving traffic between different subnets is routing. Any device that didn't do this would not be a router! So what has Netopia got to do with anything? And what is wrong with the LMCE Core? It is a router too! And just like every other router in existance, it could route the traffic from the external network to the internal network, if you so desired, and were prepared to poke swiss-cheese holes in the Core's firewall. But that misses the point, as per the link above, everything you want to communicate with each other should be on the same network. And in normal circumstances there are no reasons not to do this.