I suspect that the DNS aspect will be fine. The middle DNS servers only need one valid response to cache it for $TTL, but they can't cache SERVFAIL.
> but they can't cache SERVFAIL.
Correction: according to Cloudflare's blog post, some do cache errors as well.
I mean connecting your company to the internet when you have billions of devices waiting in the line to fetch updates, or whatever.
Will not that be an issue? Re-enabling routing to such a massive internet service...
Anyway, I didn't even notice since I run knot-resolver at home.
I wonder what it will be like connecting Facebook back to the internet, thundering herd and everything...