April 1st, 2021 Update: This issue has been resolved by Apple in the last iOS update to iOS 14.
Cisco Umbrella is aware of an issue pertaining to the functionality of the Sonos app and system while the Cisco Security Connector (CSC) is in use.
This article applies to you if:
- The CSC application is installed and configured on your iOS device
- The Sonos app is in use to play content on your local network
This article does not apply to you if:
- You do not use the CSC application or it is not configured on your iOS device
- You only use Umbrella network level protection
Issue description and impact
Impacted devices will not be able to register new Sonos speakers, browse some music sources from within the Sonos app, or play some sources of music to Sonos speakers. All impacts are observed from within the Sonos app for sources that include TuneIn and Amazon Music sources.
Cause and next steps
This issue will require a resolution from the Sonos side. Please contact Sonos support to add your support for a resolution.
Cisco Umbrella has investigated this issue and confirmed that all DNS queries received by the CSC are answered without issue when the impacts occur. As a result, the issue is confirmed to occur in the OS layer between the DNS request and the transfer of this DNS query via the NEDNSProxyProvider Network Extension in iOS to the CSC with a component of the Sonos system currently in use.