version 0.9.6 (yet unreleased)
------------------------------

Pablo Neira Ayuso <pablo@netfilter.org>:

o fix compilation problem due to missing headers (Krisztian Kovacs)
o include kernel options and Fedora comments in the INSTALL file
o remove -lpthread during compilation
o update library function checking in configure.in

= conntrack =
o fix missing `-g' and `-n' options in getopt_long control string
o add support for secmark (requires Linux kernel >= 2.6.25)
o add mark and secmark information to the manpage
o cleanup error message
o add support for -E -o xml,timestamp

= conntrackd =
o Remove window tracking disabling limitation (requires Linux kernel >= 2.6.22)
o syslog support (based on patch from Simon Lodal)
o add CacheWriteThrough clause: external cache write through policy
o add support for secmark (requires Linux kernel >= 2.6.25)
o add conntrackd (8) manpage
o raise ignorepool maximum limit from 1024 to INT_MAX
o Use more appropriate names for the existing synchronization modes:
	o rename `persistent' mode to `alarm'
	o rename `nack' mode to `ftfw'
o Now default synchronization mode is ftfw instead of alarm
o rename `examples' directory to `doc'
o add support for related conntracks (requires Linux kernel >= 2.6.22)
o show error and warning messages to stderr
o hash lookup speedups based on comments from netdev's discussions
o add support for connection logging to the statistics mode via Logfile
o implement buffered connection logging to improve performance
o minor irrelevant fixes for uncommon error paths and fix several typos
o detach daemon from its terminal (Ben Lenitz <BLentz@channing-bete.com>)
o obsolete `-S' option: Use information provided by the config file
o daemonize conntrackd after initialization
o rename class `buffer' to `queue' which is what it really implements
o fix logfiles permissions, do not default to umask
o wake up the daemon iff there are real events to handle instead of polling
o add support for tagged vlan interfaces in the config file, e.g. eth0.1
o improve alarm framework based on suggestions from Max Kellerman
o constify queue_iterate()
o use timeradd() since manipulating tv_sec directly

Max Kellermann <max@duempel.org>:

o fix shadow warnings by renaming variables or making them local

= conntrackd =
o resolve global variable "alarm" conflict with alarm() function in unistd.h.
o enable gcc warnings, including -Werror
o use list_for_each_entry() instead of list_for_each()
o use const when possible
o remove prefetch in slist.h since it confuses gcc
o fix illegal use of return in the yacc code, use break instead
o fix wrong invocations after prototype cleanup
o set the return type of the parse functions to "void"
o use the comma operator instead of curly braces
o add missing function prototypes
o merge several *_alarm() functions into init_alarm()
o use add_alarm() in mod_alarm() to avoid code duplication
o import tcp_state_helper only once
o add missing printf arguments

version 0.9.5 (2007/07/29)
------------------------------

= conntrackd =
o conntrack-tools requires libnetfilter_conntrack >= 0.0.81 
o add len field to nethdr
o implement buffered send/recv to batch messages
o use buffer of MTU size
o stop using netlink format for network messages: use similar TLV-based format
o reduce synchronization messages size up to 60%
o introduce periodic alive messages for sync-nack protocol
o timeslice alarm implementation: remove alarm pthread, remove locking
o simplify debugging functions: use nfct_snprintf instead
o remove major use of libnfnetlink functions: use libnetfilter_conntrack API
o deprecate conntrackd -F, use conntrack -F instead
o major rework of the network infrastructure: much simple, less messy
o simplify cache_flush function: use cache_del()
o remove current script_fault.sh when we reach fault state
o conntrackd requires the connection tracking event API: insist more in INSTALL

= conntrack =
o better protocol argument checkings
o fix per-protocol filtering, eg. conntrack -L -p tcp 
o show per-protocol help, ie. conntrack -h -p tcp
o add alias --src for --orig-src and alias --dst for --orig-dst
o include protocol filters in the manpage

version 0.9.4 (2007/07/02)
------------------------------

o fix error message in configure.in (Eric Leblond)
o add library dependency checking to configure.in

= conntrackd =
o simplify checksum code: use UDP/multicast checksum facilities
o fix silly bug in build_network_message: out of bound memset
o remove useless backlog parameter in multicast sockets
o remove reminiscents of delay destroy message and relax transitions
o remove confusing StripNAT parameter: NAT support enabled by default
o relax event tracking: *_update callbacks use cache_update_force
o use wraparound-aware functions after/before/between
o commit phase: if conntrack exists, update it
o local requests return EXIT_FAILURE if it can't connect to the daemon
o remove several debug statements
o fork when internal/external dump and commit requests are received
o lots of cleanups

= conntrack =
o fix segfault with conntrack --output (Krzysztof Oledzky)
o use NFCT_SOPT_SETUP_* facilities: nfct_setobjopt
o remove bogus option to get a conntrack in test.sh example file
o add aliases --sport and --dport to make it more iptables-like
o add support for `-L --src-nat' and `-L --dst-nat' to show natted connections
o update conntrack(8) manpage
o remove dlopen infrastructure

version 0.9.3 (2007/05/22)
------------------------------

= conntrackd =
o fix commit of confirmed expectations (reported by Nishit Shah)
o fix double increment of counters in cache_update_force() (Niko Tyni)
o nl_dump_handler must return NFCT_CB_CONTINUE (Niko Tyni)
o initialize buffer in nl_event_handler() and nl_dump_handler() (Niko Tyni) 
o CacheCommit value can be set via conntrackd.conf for the NACK approach
o fix leaks in the hashtable/cache flush path (Niko Tyni)
o fix leak if a connection already exists in the cache (Niko Tyni)
o introduce a new header that encapsulates netlink messages
o remove all '_entry' tail from all functions in cache.c
o split cache.c: move cache iterators to file cache_iterators.c
o fix inconsistencies in the cache API related to counters
o cleanup 'usage' message
o fix typo in examples/sync/nack/node1/conntrackd.conf
o introduce message checksumming as described in RFC1071 (enabled by default)
o major cleanups in the synchronization code
o just warn once that the maximum netlink socket buffer has been reached
o fix ignore conntrack entries by IP and introduce ignore pool abstraction layer
o introduce netlink socket buffer overrun handler
o constification of hash, compare and hashtable_test functions in hash.c
o introduce ACKnowledgement mechanisms to reduce the size of the resend queue
o remove OK messages at startup since provide useless data
o fix compilation warning in mcast.c: recvfrom takes socklen_t not size_t
o add a lock per buffer: makes buffer code thread safe
o introduce 'Replicate' clause to explicitely set states to be replicated
o kill cache feature abuse: introduce nicer cache hooks for sync algorithms
o fix oversized buffer allocated in the stack in the cache functions
o add support to dump internal/external cache in XML format '-x'
o add script for keepalived fault state (eg. unplugged cable/link down)

= conntrack =
o port conntrack to the new libnetfilter_conntrack API
o introduce '--output xml,extended,timestamp' option for '-L', '-G' and '-E'
o deprecated '--id'
o replace '-a' by '--src-nat' and '--dst-nat'
o use positive logic in error handling
o remove sctp support until is fully supported in the kernel side
o update conntrack manpage
o update test.sh file in examples/cli/
o several fixes for the output of usage messages

version 0.9.2 (2007/01/17)
--------------------------
o remove spamming packet lost messages
o generalize network netlink sequence tracking 
o fix bogus error message on resync `-R'
o fix endianess issues in the network netlink message
o introduce generic netlink multicast primitives to send and receive
o fix bogus replayed multicast message due to sequence numbering wraparound
o introduce counter for malformed netlink messages received
o introduce a new syntax for the `Sync' section  in the configuration file
o several cleanups and remove unused variables
o add autostuff to include examples in the tarball (reported by Victor Lozano)
o use the new API available in libnetfilter_conntrack-0.0.50
o implement a NACK based protocol for replication

version 0.9.1 (2006/11/06)
--------------------------
o conntrackd requires kernel >= 2.6.18
o remove bogus TIMERS_MODE constant
o implement bulk mode '-B': first works to address the preemption issue
o fix minor reduction conflicts in the configfile grammar
o check for CAP_NET_ADMIN instead of requiring root privileges
o check that linux/capability.h exists
o fix formatting at dump statistics '-s'
o move dump traffic stats before multicast traffic stats
o move event and dump handler to a generic infrastructure: kill events.c file
o kill unused function inc_ct_stats
o kill file resync.h
o cleanup broadcast_sync: renamed to mcast_send_sync
o sed 's/perror/debug/g' local.c
o fix bogus increment of update_fail stats at dump stage
o display descriptive error if we can't connect to conntrackd via UNIX socket
o remove debugging message from alarm.c
o move dump_mcast_stats to mcast.c where it really belongs
o rename stats.c to traffic_stats.c
o check for replayed/lost multicast message: simple seq tracking w/o recovery
o reissue nfnl_catch on ENOENT error: a message for other subsystem
o remove test/ directory in tree
o improve cache commit stats
o kill last_commit and last_flush from cache statistics: use the logfile
o recover cache naming for dump stats `-s'
o display multicast sequence tracking statistics: packets lost and replayed
o zero ct_sync_state and ct_stats_state structures after allocation
o improve keepalived scripts:
   - resync with conntrack table on transition to master
   - send bulk on transition to backup
o implement alarm cascade of ten levels
o implement timer cache flavour: limited life of entries in the external cache
o implement a global lock that protects operation with conntrack entries
o remove debug checking in cache_del_entry
o set a reduced timeout for committed entries: 180 seconds by default
o update comments on the sync-mode code
o introduce delay destroy messages facility
o increase timer for external states from 60 to 180 seconds
o remove unused replicate/dont_replicated constants
o fix cache entry clashing issue (reported by Maik Hentsche)
o fix bogus increment of error stats in the external cache
o remove pollution generated by `[REQ] cache dump' message from logfile

version 0.9.0 (2006/09/17)
--------------------------
o implement initial for IPv6 (untested)
o implement generic extensible cache: kill the internal and external caches
o implement persistence cache feature
o implement lifetime cache feature
o modify UNIX facilities identification numbers:
  separate master conntrack facilities and internal plugin facilities
o break backward compatibility of configuration file:
  remove IgnoreLoopback, use IgnoreTrafficFor instead
  remove IgnoreMulticastTraffic, use IgnoreTrafficFor instead
o merge event/event_subsys and sync/sync_subsys initialization to run.c
o improve control of the iteration process in the hashtables
o fix wrong locking in the alarm thread
o supersede AcceptNAT by StripNAT clause
o replace ignore traffic array by a hashtable
o move lockfile checking before daemonization
o on initialization error give a descriptive error
o introduce netlink socket size grown limitator
o introduce force resync with master conntrack table facility '-R'
o ignore SIGPIPE signal
o kill post_step since it is not used anymore

version 0.8.3 (2006/09/03)
--------------------------
Author: Maik Hentsche <maik mm-double net>

o Fix typo in conntrackd -h
o Disable debugging messages by default
o No signals while signals handlings
o Add extra checkings at forking
o Check maximum size for file passed via -C

Author: Pablo Neira Ayuso <pablo netfilter org>

o retry select() if EINTR is returned (Reported by Maik Hentsche)
o Fix bug in slist_for_each_entry (Reported by Maik Hetsche)
o Signal handler registration done after intialization
o Implement alarm thread (based on Maik Hentsche's patch)
o Fix segfault on conntrackd -k (Reported by Maik Hentsche)
o Fix bug on alarm removal (Reported by Maik Hentsche)
o configure stops if bison, flex or yacc are not installed

version 0.8.2 (2006/07/05)
--------------------------
o RelaxTransitions clause introduced in Sync mode
o multicast messages sequence tracking
o SocketBufferSize clause to set up the netlink socket buffer
o use new libnfnetlink API to solve limitations of nfnl_listen
o extra sanity checkings for netlink multicast messages
o improve statistics
o tons of cleanups 8)

version 0.8.1 (2006/06/13)
--------------------------
o -f now just flushes the internal and external caches
o -F flushes the master conntrack table
o fix segfault under heavy load and signal received
o added -S mode for statistics: still needs more thinking

version 0.8.0 (2006/06/11)
--------------------------
o more work to generalize the daemon: now it's ready to implement
modular support for adaptive timers and conntrack statistics, time
to implement them ;). This is *still* a work in progress.

version 0.7.2 (2006/06/05)
--------------------------
o stupid bug in normal and alarm caches initialization: flush unset
o fix racy signal handling

version 0.7.1 (2006/06/05)
--------------------------
o Bugfix for multicast sockets communication

version 0.7 (2006/06/01)
------------------------
o Major code re-structuration: internal and external cache abstraction
o sequence tracking for event messages
o expect more changes, I still dislike some stuff in its current status ;)

version 0.6 (2006/05/31)
------------------------
o Lock file support
o use new API nfct_conntrack_event_raw
o major code clean ups

version 0.5 (2006/05/30)
-------------------------
o Fix multicast server binds to wrong interface
o Include clause `IgnoreProtocol', deprecates IgnoreUDP and IgnoreICMP

version 0.4 (2006/05/29)
------------------------
o Initial release

conntrack changelog
===================

2006-03-20
<hidden@sch.bme.hu>
	o fix ICMP protocol extension parse callback

2006-01-15
<pablo@netfilter.org>
	o Added missing parameters to set the ports of an expectation tuple
	o Add support to filter dumped entries. 
	  ie: conntrack -L -p tcp --orig-port-dst 993
	  display all the connections to IMAPS servers
	      conntrack -L -m 2
	  display all the connection marked with 2
	o Bumped version to 1.00beta2

2005-12-26
<pablo@netfilter.org>
	o add IPv6 support: main change
	o removed dead code: iptables_insmod and get_modprobe
	o compact the commands vs. options table
	o move working vars from the stack to the BSS section
	o update manpage
	o Bumped version to 1.0beta1
<yasuyuki.kozakai@toshiba.co.jp>
	o check address family mismatch
	o fix incomplete copying IPv6 addresses

2005-12-19
<pablo@netfilter.org>
	o We only support ipv4 at the moment: set l3protonum to AF_INET
	o Minor changes to prepare upcoming ipv6 support

2005-12-03
<pablo@netfilter.org>
	o Add support to filter events. ie: -p tcp --orig-port-dst 80 in
	conjuction with -E to get all the requests to HTTP servers
	o Update manpage
	o Missing static function declaration in the protocol handlers
	o Use protocol flags defined in libnetfilter_conntrack
	o Bumped version to 0.991

2005-11-22
<marcus@ingate.com>
	o Fix oversized number of options

2005-11-11
<laforge@netfilter.org>
	o don't check for kernel header path in configure, since we don't use
	  kernel headers
	o don't check for libnfnetlink, we don't use it directly
	o move plugins into pkglibdir
	o remove 'lib' prefix of plugins, they're not really libraries
	o remove version information from plugin filenames
	o Bumped version to 0.99
2005-11-09
<pablo@netfilter.org>
	o set status to zero, libnetfilter_conntrack now activate
	IPS_CONFIRMED since all conntrack in hash must be confirmed.
	o Bumped version to 0.98

2005-11-08
<olenf@ans.pl>
	o Fix warnings generated by gcc -Wall
	o Fix conntrack exit value at error
	o Replace obsolete inet_addr by inet_aton

2005-11-05
<olenf@ans.pl>
	o Improved conntrack -h output
	o add htons for icmp id.
<pablo@eurodev.net>
	o -t and -u are optional at update.
	o Fixed versioning :(
	o Bumped version to 0.97

2005-11-03
<laforge@netfilter.org>
	o Use extra 'data' argument of nfct_register_callback() function that
	  I've introduced in libetfilter_conntrack.
<olenf@ans.pl>
	o moves conntrack tool from bin to sbin directory since this
	application is an administration utility and it requires uid==0 or
	CAP_NET_ADMIN
<pablo@eurodev.net>
	o check if --state missing when -p is passed
	o command type is passed to final_check: checkings based on the
	command can be done now.
	o kill duplicated definition of IPS_* bits: Already present in 
	libnetfilter_conntrack.
	o Move action and command enum to conntrack.h
	o kill NIPQUAD macro
	o make conntrack handler cth static.
	o Bumped version to 0.96

2005-11-01
<pablo@eurodev.net>
	o Fix error message describing illegal option -E -i
	o -D -i ID requires tuple information: Display an error message
	o Use NFCT_ALL_CT_GROUPS flag instead of NFCT_ALL_GROUPS
	o Event mask doesn't make sense for expectations, kill dead code
	o Bumped version to 0.95
<olenf@ans.pl>
	o Fix wrong formating in conntrack -h

2005-10-30
<pablo@eurodev.net>
	Special thanks to Deti Fiegl from the Leibniz Supercomputing Centre in
	Munich, Germany for providing the "fast" hardware to reproduce
	spurious bugs ;)

	o Replace misleading message "Not enough memory" by "Can't open handler"
	o New option -i for expectation dumping: conntrack -L expect [-i]
	o sed 's/VERSION/CONNTRACK_VERSION/g'
	o Fix nfct_open flags, now uses NFCT_ALL_GROUPS when needed
	o Bumped version to 0.94

2005-10-28
<pablo@eurodev.net>
	o New option -i for dumping: conntrack -L [-i]
	o Fixed warning in findproto due to a stupid wrong type definition
	o sed 's/nfct_set_callback/nfct_register_callback/g'
	o killed the 'retry' logic, *sigh* it is broken in some cases
	o killed broken and unneeded protocol handler destructors (fini)
	o killed unregister_proto
	o Fixed code indentation in the command selector
	o Bumped version to 0.93

2005-10-27
<pablo@eurodev.net>
	o Use conntrack VERSION instead of the old LIBCT_VERSION
	o proto_list and lib_dir are now static
	o kill dead code: function dump_tuple
	o Bumped version to 0.92

2005-10-25
<eleblond@inl.fr>
	o Add missing autogen.sh file

2005-10-24
<pablo@eurodev.net>
	o use NFCT_ANY_GROUP flag in nfct_open()

2005-10-21
<pablo@eurodev.net>
	o Bumped version to 0.90
	o Add support for id and marks

2005-10-20
<pablo@eurodev.net>
	o Kill some more files that generated by the autocrap
	o Resync with the lastest libnetfilter_conntrack API changes

2005-10-16
<pablo@netfilter.org>
	o Rename libct_proto.h to conntrack.h
	o Remove config.h.in from svn, it's autogenerated by the autocrap :)
	o Remove dead functions in the SCTP protocol helper

2005-10-14
<pablo@netfilter.org>
	o Kill config.h.in, it's generated by the autocrap
	o The conntrack tool now uses libnetfilter_conntrack :)
	o libct.c has been killed, now it's in libnetfilter_conntrack
	o Check if you're root or CAP_NET_ADMIN
	o Bumped version number to 0.86

2005-10-07
<chentschel@iplan.com.ar>
	o Fixed ICMP options
<pablo@netfilter.org>
	o Multiple fixes for the ICMP protocol handler
	o Fix ICMP output: wrong output. type and code were set to zero.

2005-10-05
<pablo@netfilter.org>
	o Fix up counters
	o Fix up compilation (IPS_* stuff missing), still need a proper fix
	o Bumped version number to 0.82

2005-09-24
<laforge@netfilter.org>
	o Get rid of C++ style comments
	o Remove remaining bits of "-A --action", group-mask and dump-mask
	o Clean up #include's
	o Fix double-free when exiting via signal handler (Ctrl+C)
	o Add "version" member to plugins
	o Fix some Endianness issues when printing CTA_STATUS

2005-08-31
<pablo@netfilter.org>
	o Fix packet and bytes counters (use __be64_to_cpu)
	o Fix ip_conntrack_netlink load-on-demand

2005-07-12
<pablo@eurodev.net>
	o Use conntrack netlink attributes: Major change
	o Kill action setting: Mask based dumping
	o Fix ChangeLog

2005-05-23
<laforge@netfilter.org>
	o Fixed syntax error (tab/space issue) in help message
	o Fixed getopt handling on big endian machines
	o Fixed possible future read-over-end-of-array in TCP extension
	o Add manpage
	o Add missing space at output of libct_proto_icmp.c
	o Add status bits that were introduced in 2.6.11
	o Add SCTP extension
	o Add support for expect creation
	o Bump version number to 0.63

2005-05-17
<pablo@eurodev.net>
	o Added descriptive error messages.
	o Fix wrong flags check in [tcp|udp] proto helpers.

2005-05-16
<pablo@eurodev.net>
	o Implemented ICMP proto helper
	o Added help() and final_check() functions for proto helpers.

2005-05-01
<pablo@eurodev.net>
	o Created changelog file
	o Deleted libctnetlink.h and libnfnetlink.h from the include/ dir.
	o Added support for version (-V) and help (-h)
	o Added event mask based support
	o Added GPLv2 headers
	o Use fprintf instead of printf
	o Defined print_tuple and print_proto output interfaces
	o ctnl_[get|del]_conntrack handles return value from kernel via msgerr
	o Added support for conntrack table flushing
	o Added test case file (test.sh)
	o Improve dump output

<azez@ufomechanic.net>
	o Autoconf stuff for conntrack + some pablo's modifications.
	o Fixed packet counters formatting (use %llu instead of %lu)

2005-04-25
<pablo@eurodev.net>
	o Added support for mask based event dumping
	o Added support for mask based event notification
	o On-demand autoload of ip_conntrack_netlink