Another option is to use a wifi extender
which I am currently using, a Netgear AC750, as I am unable to run a cat5e
cable directly to my radio. The AC750 has one Ethernet port for a
hardwired configuration, and then uses your existing wifi to connect to your router
at either 2.4 GHz or 5GHz.band.
About the only issue with this is setup is setting the wps trust between the router and extender took a while to sync on 5ghz, otherwise I do not need the computer to bridge the network to my 6600M, as it can run independently to the network.