Previously, the secretariat of IETF admitted that it is not possible to run SMTP over IPv6 anymore: mailarchive.ietf.org/arch/msg/…

Now Digicert follows up shutting down IPv6 support for CRL and OCSP because it is apparently not possible to run HTTP over IPv6 anymore. 🤬
docs.digicert.com/en/whats-new…

in reply to Ondřej Caletka

As a follow-up, Digicert has announced that they'll be adding #IPv6 back to their CRL/OCSP lists sometime in (or shortly after?) March 2026:

knowledge.digicert.com/alerts/…

#ipv6