docs.inference.coop does not exist — it resolved only because *.inference.coop answers, which is how it got into this sheet (and into the digest footer, since fixed to point at git.inference.coop/co-op/docs). Adds the consequence that matters for cutover: a resolving name proves nothing here, so reconcile against the registrar's record list rather than by resolution.
New box: 179.237.86.116 / 2001:1600:18:206::89, 4CPU/12GB/250GB,
Ubuntu 26.04 LTS, one free snapshot slot, reverse DNS unset on both
addresses. IPv6 exists, so the 18 AAAA records are repointed rather
than deleted.
Live zone inventory: 19 A + 18 AAAA records, all TTL 3600 (the lower values
seen on some answers are cache countdowns). The AAAA scope was understated
in the runbook - it is 18 hostnames, not 3. No CAA records, so no CA
restriction to update. The /var/lib/nextcloud host mount resolves to 3 MB of
regenerable thumbnails, so it is no longer an open unknown.