Hi @RedRobin132
Welcome to the Sonos Community!
Sorry to hear about this issue you are having with playing AirPlay content to your Arc from your Macbook.
As you are able to play from your Macbook when using a Wi-Fi connection rather than ethernet, it seems pretty clear to me that the issue lies either with the UniFi configuration, or with the Macbook’s configuration. I think the former is more likely.
Please try the following steps:
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Log into the UniFi controller.
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In the Settings tab, click WiFi
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Click WiFi under the Settings page
- Click on the network SSID. Note: if there are multiple SSIDs that the players and controllers connect to, the same will need to be done for each SSID.
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Scroll down to Advanced Configuration and set it to Manual
- Scroll down to Multicast Management and click on Show Options
- Disable the following options by unchecking the Enable option:
- Multicast and Broadcast Control (blocks all multicast and broadcast for non-listed devices).
- Multicast Enhancement (converts multicast to unicast when possible).
- Client Device Isolation (prevents wireless client on the same AP from communicating with each other).
- Proxy ARP (converts broadcast to unicast when possible).
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Click on the Apply Changes button at the bottom of the page.
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Once completed, allow up to a minute for the AP to provision (apply the settings) and restore online connection
Once done, please try again. If you still have the same issue, please reboot all speakers, the router, and the Macbook.
If that has still not worked, I recommend you get in touch with our technical support team who have tools at their disposal that will allow them to give you advice specific to your Sonos system and what it reports.
I hope this helps.
