[tialaramex]

Good point. Worth spelling out that your DNS doesn't need to understand CAA records, it merely needs to be able to conform to the obvious requirement that if you ask it "Hey are there CAA records for this name?" it says "No" rather than crashing, silently ignoring the question or returning an error indication.

As usual in DNS this works fine in the Free implementation your OS vendor included, shame about all the expensive proprietary choices that get this wrong for every single new record type.