BIND 9.12.1rc1 is now available

[Michael McNally]

BIND 9.12.1rc1, the first release candidate for BIND 9.12.1 is now
available for download from https://www.isc.org/downloads

Its release notes can be found at:

  https://kb.isc.org/article/AA-01564/81/BIND-9.12.1rc1-Release-Notes.html

Users who are migrating an existing BIND configuration to this new
version should take special note of this change if they are DDNS users:

   "update-policy rules that otherwise ignore the name field now
   require that it be set to "." to ensure that any type list present
   is properly interpreted. Previously, if the name field was omitted
   from the rule declaration but a type list was present, it wouldn't
   be interpreted as expected."

It's a correction to an ambiguous case that was previously allowed,
but which was capable of causing unexpected results when accidentally
applied.  The new requirement eliminates is intended to eliminate the
confusion, which previously caused some operators to misapply security
policies.  However, due to the new requirement, named configuration
files that relied on the previous behavior will no longer be accepted.

The syntax change should not affect most operators, even those using
"update-policy" to define Dynamic DNS permissions, but if you are unsure
then we recommend using the "named-checkconf" utility provided with BIND
to ensure that the syntax used in your configuration is allowed before
applying your upgrade in production.

Also, a bug fix was accidentally omitted from the release notes,
even though it is included in the release.  The release notes should
also have mentioned this change:

  4894.[bug] named could crash while rolling a dnstap output file. [RT
#46942]

The notes will be corrected for the 9.12.1 final release, but users
of dnstap will presumably want to know that the dnstap log file roll
fix *is* included in this Release Candidate.