I have a router that has 3 non-contiguous class C networks being routed to it and a Pix behind it. The Pix must have static translations that have public addresses that fall into each of the subnets. Since I can only have 1 address on the Pix outside interface, and I need to have external statics that fall into all three subnets, can I simply put an IP and 2 secondarys on the router's Ethernet interface and do the statics on the Pix as I would normally, even though the external static addresses aren't in the same subnet as the Pix's external interface?