Install latest/stable of certbot-dns-rfc2136
Ubuntu 16.04 or later?
Make sure snap support is enabled in your Desktop store.
Install using the command line
sudo snap install certbot-dns-rfc2136
Don't have snapd? Get set up for snaps.
RFC 2136 DNS Authenticator plugin for Certbot
Generate an embeddable card to be shared on external websites.
Choose your Linux distribution to get detailed installation instructions. If yours is not shown, get more details on the installing snapd documentation.