(Note: This post is also cross-posted on the Let's Encrypt blog) As announced earlier this year, Let's Encrypt now issues IP address and six-day certificates to the general public. The Certbot team here at the Electronic Frontier Foundation has been working on two improvements to support these features: the --preferred-profile flag released last year in Certbot 4.0, and the --ip-address flag, new in Certbot 5.3. With these improvements together, you can now use Certbot to get those IP address ce...