Smart switches are part of most wireless infrastructures - but many still run the vendor firmware, capabilities to install own software are limited. OpenWRT enables open firmware with modern Linux kernel, software updates, and your own software. Recent Realtek Switches come with great specs at a reasonable price point. I'll provide an overview of technical capabilities and limitations, current integration status and features of OpenWRT on Realtek, and discuss some applications for testbeds, community networks and wireless ISPs.