Let's Encrypt revokes 3M certificates due to CAA checking bug

Here's some quick&dirty stats from the list of revoked certificates: https://gist.github.com/SpComb/6338facd12e020ec4fe561ca91f32...

There's 3M "missing CAA checking results" in total, of which 2M are dated from 2020 and 1M from last month. FWIW the only certs of mine affected were old certs from 2019-12 which had since already been renewed in Feb, and the renewed certs are not affected?

The largest account has 445k certs revoked, and the most revoked certs from last month (most likely to still be in active use?) is 43k for a single account. I hope your rate-limits are in order if you're going to start reissuing all of those before midnight :/

BTW account number 131 at the top of the file seems to mostly be akamaiedge.net sites :)