I have a master/local setup with two 7210s running 6.4.4.16_61809. I am trying to get a Sonos Connect to work on a PSK SSID. The process always stalls at the point where the Connect and the app attempt to discover each other. I can confirm that they're both connected to the same SSID (plus same VLAN), and have an appropriate role assigned. Here's the nitty gritty:
AirGroup configuration in the controller should only be necessary if broadcast filtering is turned on in the VAP, or if the devices are on separate VLANs. However, at least one forum post indicated that it may be necessary to enable AirGroup even with no broadcast filtering and with devices on the same VLAN. Fine, so i enabled Airplay, DIAL, and DLNA Media. No luck. So I issued 'show airgroup blocked-service-id' to see what's being blocked. I can see by filtering by the IP of the SONOS, some service IDs are being blocked. So I made a new AirGroup.... list? and added those service IDs, along with all the service IDs that other Airheads suggested. Still no luck.
I did a wireshark capture from another device on the same SSID, and I didn't see any traffic from the Sonos or the client. However, using a network diagnostics app on the client, I can see the Sonos device.