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Ubiquiti Unifi MDNS Issue

If MDNS is unchecked then Home Assistant and ESPHome will not auto discover new devices.
Below are guides for using your PC and the Unifi Network mobile app to fix this issue.


Steps for PC
1. Log into your Unifi network through your default IP address which is usually 192.168.1.1
2. Select Network

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3. Select Settings

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4. Select Networks

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5. Select the Default Network

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6. Check Multicast DNS

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7. Now the Home Assistant/ESPHome auto-discover issue should be fixed!
8. If this does not work then you can also try checking IGMP Snooping on your IoT networks.


Steps for the Unifi Network Mobile App


1. Open the Unifi Network app
2. Tap Settings/Gear Icon
3. Tap Networks
4. Tap Default Network
5. Tap the Multicast DNS slider
6. Now the Home Assistant/ESPHome auto-discover issue should be fixed!
7. If this does not work then you can also try tapping the IGMP Snooping slider on your IoT networks.
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