This is the 3rd DNS related outage I've seen in a week. Frountier Communications lost their DNS. Trying to recall what the 3rd one was.

My Unbound resolver round-robins DNS-over-TLS requests, between Cloudflare & Quad9. Cloudflare's outage never impacted us that I could tell.

Nevertheless, I am reminded that I ought to add a couple of DoT providers (who aren't Google). Not sure who else came online since I setup.