chrony (4.5-3ubuntu4) plucky; urgency=medium

  Starting with version 4.5-3ubuntu4, chrony will ship with a default
  configuration set to use Ubuntu NTS servers by default.

  The two main changes are:

  a) NTS/KE uses a separate port (4460/tcp) to negotiate security parameters,
  which are then used via the normal NTP port (123/udp). This is a new
  deployment, running on different IP addresses than the service without NTS.

  b) A new CA is installed in /etc/chrony/nts-bootstrap-ubuntu.crt that is
  used specifically for the Ubuntu NTS bootstrap server, needed for when the
  clock is too far off. This is added to certificate set ID "1", and defined
  via /etc/chrony/conf.d/ubuntu-nts.conf. There is also a staging CA shipped
  with the package, but it's not referred to anywhere and is just there as a
  convenience for testing the staging servers.

  If your network does not allow access to the Ubuntu NTS servers and the
  required ports, and the new configuration is in place, chrony will not be
  able to adjust this system's clock. To revert to NTP, just edit the
  configuration file in /etc/chrony/sources.d/ubuntu-ntp-pools.sources and
  revert to using the listed NTP servers in favor of the NTS ones. Or revert
  to your previous copy of that configuration file.

 -- Andreas Hasenack <andreas@canonical.com>  Fri, 11 Oct 2024 13:31:00 -0300

chrony (4.5-3ubuntu2) oracular; urgency=medium

  Starting with chrony version 4.5-3ubuntu2 the default time sources are 
  configured by default in the /etc/chrony/sources.d/ubuntu-ntp-pools.sources
  file.
  Setting the chrony/configure_ubuntu_pools_in_sourcesd debconf key to "false",
  either via pre-seeding or dpkg-reconfigure, will result in the package being
  installed without any time sources configured. With this setting, in the case
  of an upgrade, if /etc/chrony/sources.d/ubuntu-ntp-pools.sources exists, it
  will be removed and subsequent upgrades will not recreate it.

 -- Ankush Pathak <ankush.pathak@canonical.com>  Tue, 16 Jul 2024 17:57:41 -0600

chrony (4.1~pre1-1) experimental; urgency=medium

  Starting with chrony 4.0, it is possible to specify NTP sources in files
  having the .sources suffix. In Debian, these files can be placed in
  /etc/chrony/sources.d/ or any other directories specified by the 'sourcedir'
  directive.
  I would like to draw your attention that with chrony 4.1, each line of a
  source file *must* be terminated by a trailing newline. Failing that, the NTP
  source(s) will be ignored.

 -- Vincent Blut <vincent.debian@free.fr>  Sun, 25 Apr 2021 12:44:09 +0200
