Wifi to ethernet support?

Well after getting the wifi card in the ATV to work, I noticed the tethering option. I wanted to setup wifi to ethernet so that I could use my spare ATV as a network bridge for devices that do not currently have wifi. I was wondering if it is possible to set this up? When i searched for this topic I saw some things but that was with regards to the rasberryPi. I was hoping someone could shed some light onto this.

Thanks in advance,