Using "stale-answer-client-timeout" turns out to have unforeseen
negative consequences, and thus it is better to disable the feature
by default for the time being.
(cherry picked from commit e443279bbf)
Commit 9fb6d11abb (which converted BIND 9
documentation from DocBook to Sphinx) inadvertently removed a paragraph
from the description of the "max-ixfr-ratio" option. Add the missing
paragraph back.
(cherry picked from commit 3878cf4ac5)
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)
When sphinx-build is invoked without the -d command line switch, the
default path to the directory in which cached environment and doctree
files are placed is OUTPUTDIR/.doctrees. This causes the contents of
such cache directories to needlessly be included in BIND release
directories. Avoid that by employing the -d command line switch to make
each sphinx-build process use a cache directory outside the output
directory. Make sure these cache directories are separate from each
other as well, to prevent multiple sphinx-build processes running in
parallel from interfering with each other.
In order to prevent documentation building issues from being glossed
over, pass the -W command line switch to all sphinx-build invocations.
This causes the latter to return with a non-zero exit code whenever any
Sphinx warnings are triggered.
(cherry picked from commit 51479ed9a3)
as "type primary" is preferred over "type master" now, it makes
sense to make "primaries" available as a synonym too.
added a correctness check to ensure "primaries" and "masters"
cannot both be used in the same zone.
(cherry picked from commit 16e14353b1)
The DNS Flag Day 2020 reduced all the EDNS buffer sizes to 1232. In
this commit, we revert the default value for nocookie-udp-size back to
4096 because the option is too obscure and most people don't realize
that they also need to change this configuration option in addition to
max-udp-size.
(cherry picked from commit 79c196fc77)
Since the queries sent towards root and TLD servers are now included in
the count (as a result of the fix for CVE-2020-8616),
"max-recursion-queries" has a higher chance of being exceeded by
non-attack queries. Increase its default value from 75 to 100.
(cherry picked from commit ab0bf49203)
Upon request from Mark, change the configuration of salt to salt
length.
Introduce a new function 'dns_zone_checknsec3aram' that can be used
upon reconfiguration to check if the existing NSEC3 parameters are
in sync with the configuration. If a salt is used that matches the
configured salt length, don't change the NSEC3 parameters.
(cherry picked from commit 6f97bb6b1f)
The DNS Flag Day 2020 aims to remove the IP fragmentation problem from
the UDP DNS communication. In this commit, we implement the minimal
required changes by changing the defaults for `edns-udp-size`,
`max-udp-size` and `nocookie-udp-size` to `1232` (the value picked by
DNS Flag Day 2020).
(cherry picked from commit bb990030d3)
Certain parts of the existing documentation for the "rrset-order"
statement are incorrect, others are ambiguous. Rework the relevant
section of the ARM to make it clear and up-to-date with the source code.
(cherry picked from commit 2ac04dc930)
The option 'dnssec-keys' was introduced in 9.15 and also renamed to
'trust-anchors'. Rename the leftover references to 'trust-anchors'.
(cherry picked from commit e6b335c2ab)
