Smartthings can't find sonos

[jkp]

Sonos Connectivity: Known Requirements

Like many others I struggled to get SmartThings to recognize and successfully add my Sonos devices. Most people’s issues with Sonos discovery in ST seem to be network-related but there’s no single list of network requirements. I’d like to use this thread to create a definitive list. Open questions remaining (please respond if you can confirm these requirements!): Does UPnP definitely need to be enabled? (Enabled works for sure.) Does Multicast definitely need to be allowed? (Allowed works for sure.) Confirmed Requirements: No additional device handlers or SmartApps are necessary to install in SmartThings for detecting Sonos devices. A Sonos BOOST is not required for SmartThings connectivity. Devices can be discovered by going to either My Home > Add a Thing or Marketplace > SmartT…