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fastd v20
=========
New features
~~~~~~~~~~~~
* The OpenWrt init script has been migrated to *USE_PROCD*. This allows
automatic restarts of fastd in the case of crashes.
- The UCI options ``up`` and ``down`` have been removed, as their
implementation was incompatible with procd-managed services. Use the options
``on_up`` and ``on_down`` instead.
* Stale status sockets are deleted automatically now, so a restart after a crash
does not fail. To avoid deleting active status sockets, a lock file is created
next to the socket file.
Bugfixes
~~~~~~~~
* The *forward* feature was implemented incorrectly for configurations that use
different encryption methods for different peers. As *forward* is generally
disabled when running mesh routing protocols over fastd, affected
configurations are very uncommon.
- Packets forwarded from peers using the *null* method were not aligned
correctly, which could lead to inferior performance or crashes on non-x86
platforms.
- Certain combinations of encryption methods led to crashes due to
insuffucient buffer space, triggering an assertion failure.
Other changes
~~~~~~~~~~~~~
* The CMake-based build system of fastd has been replaced with the more modern
`Meson <https://mesonbuild.com/>`_. Updated build instructions can be found
in the :doc:`../devel/building` section.
* Memory management of fastd's packet buffers has been optimized, increasing
throughput by 5~10% for many encryption methods, especially on low-end
hardware.
* The fastd build requires at least Bison 2.6 now.
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