The DNS role installs ddi-suite-keys.conf (a keys file without keys for
revisions from before M5, so that named.conf can always include it),
includes it before ddi-suite.conf in the validation named.conf, accepts
secondary zone files in <zone_dir>/secondary/ and creates that
directory with the mode and owner of zone_dir without ever touching its
content. The health check queries secondary zones too; a zone still
waiting for its first transfer is reported but does not fail the
deployment.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>