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11 August 2009: babeld 0.96
* Renamed babel to babeld.
* Routes are now automatically flushed when an interface goes down or an
IPv4 address changes, which avoids desynchronisation between Babel and
the kernel.
21 April 2009: babel 0.95
* Fixed a bug that broke link-quality estimation, and could cause
severe instability when we had both good and marginal neighbours.
* We now send retractions after a redistributed route is retracted.
* Fixed a bug that could cause reliable messages (retractions and
router-id switches) to only be sent twice.
* We no longer obey a silent time at startup, instead sending a bunch of
retractions. The silent time is inconvenient, but seldom useful.
* Updates for routes to self are now sent together with other updates
(they used to be sent more frequently).
* Fixes the configuration parser to interpret hello-interval as a number
of seconds, as specified in the documentation (it used to be interpreted
as a number of milliseconds).
* INCOMPATIBLE CHANGE: the update interval is now a per-interface value,
may be configured manually in the configuraton file, and defaults to
4 times the hello interval. The -u flag is gone.
10 April 2009: babel 0.94
* Fixed a bug introduced in 0.17 that caused recently retracted routes to
remain until the routing table entry was flushed.
* Implemented per-interface configuration of parameters such as link
cost, hello interval etc. The command-line flags are now only used to
set defaults.
15 March 2009: babel 0.93
* No longer update seqno periodically, rely on explicit seqno requests.
21 January 2009: babel 0.92
* Fixed a bug that could cause a crash if an interface was repeatedly
brought down and then back up.
* Implemented some protection against time stepping when POSIX clocks are
not available.
10 November 2008: babel 0.91
* Maintain buffered updates per-interface, which makes multi-interface
nodes significantly less noisy.
* Changed the strategy for dealing with unfeasible routes to be slightly
more generous while still avoiding loops.
* Fixed a bug that would cause multi-hop requests to be spuriously resent.
* Made a number of micro-optimisations throughout.
23 October 2008: babel 0.90
* INCOMPATIBLE CHANGE: all new Babel version 2 protocol, which is both
more robust and less chatty than version 1.
* Tweaked the strategies for sending triggered updates and unfeasible
requests to be more conservative.
* Minor optimisations all over the place.
* Removed the protocol specification -- the version 2 spec is maintained
separately.
18 October 2008: babel 0.17
* INCOMPATIBLE CHANGE: removed support for ``inherit'' in redistribution.
* INCOMPATIBLE CHANGE: a pidfile is now created by default.
* Increased the default seqno interval.
* Use a fixed kernel priority for routes installed by babel.
29 September 2008: babel 0.16
* Tweaked cost computation to be slightly slower.
* Implemented a local interface for GUIs.
* INCOMPATIBLE CHANGE: the -X command-line option is no more.
8 July 2008: babel 0.15
* Fixed a bug that could break link-quality estimation on yo-yo links.
* Protect against duplicate neighbour ids on the same interface.
* More tweaks to improve scaling with the number of kernel routes.
* Tweaked the default update interval.
1 July 2008: babel 0.14
* Use POSIX clocks if available to protect against clock stepping.
* Made babel use available internal routes straight away when the
set of redistributed routes changes.
* Lifted the arbitrary limit on the number of kernel routes.
* Changed the routing metric used on wireless links to plain ETX.
* Bridges are now automatically detected and treated as potential
wireless interfaces.
* Reduced the default hello interval.
24 May 2008: babel 0.13
* Removed all arbitrary limits (interfaces, neighbours, routes,
xroutes and sources).
* Fixed a bug that prevented expiration of stale sources.
* Updated the kernel interface to work with recent Linux kernels.
* More tweaks to the order in which updates are sent.
7 April 2008: babel 0.12
* Retractions are now sent multiple times, which should speed up
convergence in presence of packet loss.
* Optimised the sending of updates to make them smaller.
* Don't forward requests multiple times; this should reduce the
noise due to requests with no increase in convergence time.
* Fixed a bug that could cause a crash when resending requests.
* Added some protection against clock stepping.
29 March 2008: babel 0.11
* Implemented sub-second hello and update intervals.
* Fixed a bug that could prevent the best route from being selected
for extended periods of time.
* Implemented protection against out-of-date requests being sent and
forwarded when a node loses its sequence number.
* INCOMPATIBLE CHANGE: reduced the cost of wired networks down to 96
from 128.
* Tweaked the frequency at which a router's seqno increases, to make
it more likely that a feasible route will be available when needed.
* Implemented garbage collection of old sources.
* Implemented coalescing of unicast messages.
* Fixed a bug that could cause a crash when a link's MTU changes.
* Fixed a bug that could delay noticing that a network is no longer
idle when running Babel with the -i flag.
* Fixed a bug that could cause incorrect metrics to be advertised
when output filtering was used.
* Fixed a bug that could cause incorrect link costs to be computed when
a neighbour reduces its hello interval.
* Fixed some minor issues with the ordering of outgoing messages.
11 March 2008: babel 0.10
* Implemented the ability to automatically export local addresses (see
the ``local'' keyword in redistribute specifications). This should
avoid the need to explicitly specify -X on the command line
(Julien Cristau and Juliusz Chroboczek).
* INCOMPATIBLE CHANGE: local routes (local interface addresses) are
now exported by default. Specify ``redistribute local deny'' to
avoid that.
* Babel will now automatically choose a router id if none is
specified on the command line.
* Automatically adapt to interfaces appearing or disappearing at runtime,
as is usually the case when running over tunnels or VPNs.
* Changed the link quality computation algorithm to not discard very
lossy links.
* Multi-hop requests will now be forwarded to an unfeasible successor
under some circumstances.
* Send multi-hop requests more aggressively.
* Send requests for a new seqno upon receiving an unfeasible update
if it's better than what we have.
* No longer consider the age of routes in route selection.
* Added ability to run as a daemon.
14 February 2008: babel 0.9
* Implemented a proper configuration language to specify input and
output filters and redistribution policies.
* INCOMPATIBLE CHANGE: the flags -4, -x and -c are no longer supported.
8 February 2008: babel 0.8
* Babel will now automatically check for interfaces' up/down status,
IPv4 address, and optionally for carrier sense.
* Implemented the -w option, which disables all optimisations for
wired interfaces.
* Implemented support for non-default routing tables.
* Fixed a bug that could spuriously remove IPv4 routes (thanks to
Julien Cristau).
3 January 2008: babel 0.7
* Implemented support for IPv4.
* Fixed sending of unicast requests.
* Don't send poison when receiving a request for an unknown route.
* Basic filtering infrastructure.
* Removed support for broadcast IHU.
* Changed the behaviour of -d.
16 October 2007: babel 0.6
* Implemented resending of unsatisfied requests, with exponential backoff.
* Fixed a potential crash in the request handling code.
* Send IHUs more aggressively.
9 October 2007: babel 0.5
* Implemented forwarding of requests and replies.
* Fixed a bug that prevented requests from being parsed correctly.
* Fixed a bug that prevented IHU intervals from being sent.
* Respect reboot_time even after an id change.
* Deal with neighbours rebooting and losing their hello seqno when
computing link quality.
23 September 2007: babel 0.4
* Fixed incorrect expiration of old sources. This could prevent
convergence in some cases.
16 September 2007: babel 0.3
* Fixes to Mac OS X support (Grégoire Henry).
29 August 2007: babel 0.2
* Made jitter computation depend on how urgent a given message is.
This dramatically improves convergence speed, without increasing
network load.
* Fixed a bug that prevented neighbour associations from being
discarded at shutdown.
22 August 2007: babel 0.1
* Initial public release.
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