Bridge wlan0 to eth0

From Alpine Linux

Introduction

This wiki describes methods to bridge a wired and wireless interface to enable network communication between hosts reachable via either interface. This allows one or more wired hosts to share the wireless interface on the bridge host.

In my use case, I have a desk with a wired switch with multiple hosts connected. All wired devices on this switch can access my home wifi network via the bridge host's wireless interface.

I am only going to document the proxy ARP method as that's what I'm currently using. Please feel free to add additional methods and remove this section of the introduction.