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Facebook and Local DNS caching

I just changed internet providers (away from Comcast to local GloFiber), and a problem popped up.  When accessing Facebook from iOS 14 (iPhone and iPad), it would initially work, but after a short time, I would get "unable to establish a secure connection" error. If I switched to cellular, access works, If I then turned wifi back on, it again worked for a short amount to time. 

I realized it might be DNS related, and turned off "Local DNS Caching", and the problem is now gone. 

Eero 6 Pro, v6.4.0-2092

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  • we have options for securing against DNS spoofing via proxy, configuration changes, and injection.  These options, including DNS over HTTPS and configuration security, help ensure the secure use of internet resources.

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