Problems with CAA records only with Google and Let's Encrypt

[petercooperjr]

@MikeMcQ

I just remembered that an LE person has said if you add a CAA record at your subdomain you can reduce the total number of CAA queries made.

When was that? I think they may have changed how they've done this over time, the most recent post I can find (from last year) says that they do all the CAA names in parallel, though only after the ACME challenge passes.