172.64.36.1 & 172.64.36.2 with too 'agressive' fitering?

Hello,

Today I started experiencing failures with network connectivity and, after a few hours going around, I reached the point to switch the DNS forwarders for my local DNS server (that I suspected to act strangely) from 172.64.36.1 & 172.64.36.2 (set a long time ago to filter traffic with Gateway/Zero Trust) to some other ones (1.1.1.1, 8.8.8.8, 9.9.9.9, 208.67.222.222) and everything came back to normal.

I though to look then into the Gateway Activity Log and of course, all my failures were recorded there as blocked requests… so, for some reason, there seems to have happened a policy change on the Cloudflare side (or maybe there is a problem) that triggered sudenly some many similar events.

Has anyone experienced something similar (or is my misinterpretation of the facts)? I’ll keep the config with some alternate DNS protection for now.

Thank you,

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