I upgraded my home system to the new Ubiquity UniFi and had trouble forcing all DNS Traffic through OpenDNS Servers until I found the very easy solution.
1. Login into the UniFi Controller
2. Click the "Setting" gear in the lower left corner
3. Click Networks
4. Click the "Edit" pencil next to your corporate network
5. Check "Enable DHCP guarding" and add the open DNS Servers
6. Click "Save"
Hidden in plain sight so hopefully, it saves a few others a bit of drama.
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