Ubiquiti Unifi with Sonos on a separate VLAN
Update 2023: these instructions are out-of-date for the latest Unifi controller software versions. It's preserved here as written for those who still have older versions. This post uses a file called gateway.config.json and Unifi now say: This article is not applicable to the UniFi Dream Machine models, because all configurations are already available in the UniFi Network user interface. So I take that to mean use of this file is deprecated and it should be possible to do this via the administration webpage.