Xfinity local channel access failure
It seems like, occasionally, I will lose access to my local channels via Xfinity service. If I remove the box from Firewalla monitoring it will work fine. There seems to be some issue with Firewalla and Xfinity's use of IP video.
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Which firewalla boxes are you running? Are you in router mode? What is the LAN/WAN DNS you are using? are you using unbound / DoH? Have ad blocker on?
When you lost view, what do you see on the screen? any error message?
If you tap on devices -> [Xfinity video box] -> turn on emergency access, see if the problems remain.
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Firewalla Purple SE, Yes, router mode. Ad block is on. DNS server 75.75.75.75 and 75.75.76.76. Ubound is turned on but not applied to any devices.
The symptom is that I would lose access to all local channels on my set top boxes from Xfinity. Apparently they are using IP video for local channels. If I turn on emergency access, the problem is resolved. If I turn emergency access off, the problem may not occur for weeks. It is very intermittent, but it is resolved by turning emergency access on.
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Will try that, but I have my doubts. I have no blocking rules on the device at all. And the perplexing thing is that when it occurs, I can reinstate the channels by invoking emergency access. But, if I turn off emergency access, the channels will operate for weeks without a problem
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When you turn off emergency access (after on), very likely DNS entries were cached and after they expire, you get the problem again.
If you want do a proper test, best flush your device's DNS before testing. (turn off and on wifi for example, on most system will clear the DNS caches)
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