Bridge ethernet to Wi-Fi using WDS 4addr Linksys 3200WRT

Wireless drivers for this device are still under development (see https://github.com/kaloz/mwlwifi), and WDS support was added recently, so drivers on 17.01 do not support WDS. You can use an updated snapshot, or you can use 17.01 plus the updated drivers available at Pre-compiled updated mwlwifi drivers for stable releases.