OpenBSD: Manage DNS, DNSSEC (to automate TLSA records)

The URL posted was: https://doc.huc.fr.eu.org/en/post/openbsd-nsd-dnssec-tlsa/

Pfff! (why HN transforms it?)

How to manage DNSSEC, TLSA records, to validate TLS certificates on OpenBSD with nsd, ldns and others…