This commit converts the license handling to adhere to the REUSE
specification. It specifically:
1. Adds used licnses to LICENSES/ directory
2. Add "isc" template for adding the copyright boilerplate
3. Changes all source files to include copyright and SPDX license
header, this includes all the C sources, documentation, zone files,
configuration files. There are notes in the doc/dev/copyrights file
on how to add correct headers to the new files.
4. Handle the rest that can't be modified via .reuse/dep5 file. The
binary (or otherwise unmodifiable) files could have license places
next to them in <foo>.license file, but this would lead to cluttered
repository and most of the files handled in the .reuse/dep5 file are
system test files.
(cherry picked from commit 58bd26b6cf)
In the "Migrating from NSEC to NSEC3" section, it says:
dnssec-policy "standard" {
nsec3param iterations optout no salt-length 16;
};
There should be an integer after "iterations". Based on the following
text, the number of iterations should be 10.
(cherry picked from commit 9e109191cc)
Update the ARM to mention the new built-in "insecure" policy. Update
the DNSSEC guide recipe "Revert to unsigned" to add the additional
step of reconfiguring the zone to "insecure" (instead of immediately
set it to "none").
(cherry picked from commit fadc57d3d0)
Add a new option 'purge-keys' to 'dnssec-policy' that will purge key
files for deleted keys. The option determines how long key files
should be retained prior to removing the corresponding files from
disk.
If set to 0, the option is disabled and 'named' will not remove key
files from disk.
(cherry picked from commit 313de3a7e2)
