BT Voyager NAT

Does anyone know if the BT Voyager 220V router (on BT Broadband) will NAT addresses that do not come from it's local subnet, i.e. from a router behind the 220V's?

does it have a second LAN IP address option ? if so it can run two subnets.

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Does anyone know if the BT Voyager 220V router (on BT Broadband) will NAT addresses that do not come from it's local subnet, i.e. from a router behind the 220V's?

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A far from definitive answer. My smc router seems to manage that. And thinking about how the TCPIP protocol works, and the coding you need for NAT, I suspect it will work for most routers, primarily because you would actually have to write more code in order to do NAT only for the local subnet.

Thanks. I was under the impression that a lot of broadband routers can't do this, but I suppose your right, more code would be required to restrict NAT'ing to the local subnet, and programmers don't like to write more code than they need to.

As long as the router has a route back to the source network, I'm hoping it will work.

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As long as the router has a route back to the source network, I'm hoping it will work.

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That's your most likely show stopper. But if the source network can reach the router [in order to initiate NAT], the problem is at worst a bad routing table.