FQDN option unfortunately broke its ability send back dhcp6.vendor-opts.
[ISC-Bugs #46427]
+- The default value for server (-6) parameter, prefix-length-mode, has been
+ changed from "exact" to "prefer". In "prefer" mode the server will offer
+ the first available prefix with the same length as that requested by the
+ client. If none are found then it will offer the first available prefix of
+ any length. This is more in line with with RFC 8168 and should improve
+ the out-of-the-box user experience.
+ [ISC-Bugs #45615]
+
Changes since 4.3.0 (bug fixes)
- Tidy up several small tickets.