Extend network with Airport Express via ethernet
I have a Smart/RG VDSL Modem/Router and 2 Airport Expresses that I've run ethernet cables to and are configured to extend the network as a roaming network. I want to add one more Airport Express to the setup configured the same way, but it would be a pain to run a dedicated ethernet cable from the Smart/RG to it.
Can I just connect an ethernet cable from the LAN port on one of the Airport Expresses to the WAN port on the new Airport Express? This would be much easier to do.
Thanks for any suggestions.