Hello!
Search for forum, see something, but still have confusion. It's possible to use Wifi and Ethernet on Yun in two separate networks? I want to connect to Yun over Wifi, send commands to it, then Yun must resend commands over physical Ethernet to other Arduino boards. I try to describe it on picture.
Thanks in advance, including for useful links
Indeed. OpenWRT (on which OpenWRT-Yun is based) is made for networking. So the general answer to these kind of question is "yes of course!"