Description of problem: There is quite a lot of upstream fixes, which are not incorporated in our version of latest version. We should update to more recent version to include not only security fixes, but also behaviour fixes and some new features. Version-Release number of selected component (if applicable): bind-9.16.23-11.el9.x86_64 Additional info: https://downloads.isc.org/isc/bind9/9.16.39/RELEASE-NOTES-bind-9.16.39.html There were few feature changes, which may have to be reverted or at least documented. Some seem okay, some may affect our customers significantly. Notable examples: - https://gitlab.isc.org/isc-projects/bind9/-/issues/2398 - https://gitlab.isc.org/isc-projects/bind9/-/issues/3381 - https://gitlab.isc.org/isc-projects/bind9/-/issues/3667 - https://gitlab.isc.org/isc-projects/bind9/-/issues/3773 List of interesting new features: - https://gitlab.isc.org/isc-projects/bind9/-/issues/3249 - https://gitlab.isc.org/isc-projects/bind9/-/issues/3544 - https://gitlab.isc.org/isc-projects/bind9/-/issues/3541