I am trying to add a second ethernet interface to OpenWRT running within the MetaRouter. I have added the 2 interfaces in the MetaRouter configuration, but OpenWRT only sees one. I can enable/disable between the two - just can see both at the same time. Any clues of what I may be over looking? thanks
you should check OpenWRT manual on how to use another interface.
check commands like ip link or ifconfig to see/configure temprary additional interface.