New in version 3.5

==================

Enhancements

------------

* Add support for more accurate reading of PHC on Linux 5.0

* Add support for hardware timestamping on interfaces with read-only

  timestamping configuration

* Add support for memory locking and real-time priority on FreeBSD,

  NetBSD, Solaris

* Update seccomp filter to work on more architectures

* Validate refclock driver options

Bug fixes

---------

* Fix bindaddress directive on FreeBSD

* Fix transposition of hardware RX timestamp on Linux 4.13 and later

* Fix building on non-glibc systems

New in version 3.4

==================

Enhancements

------------

* Add filter option to server/pool/peer directive

* Add minsamples and maxsamples options to hwtimestamp directive

* Add support for faster frequency adjustments in Linux 4.19

* Change default pidfile to /var/run/chrony/chronyd.pid to allow

  chronyd without root privileges to remove it on exit

* Disable sub-second polling intervals for distant NTP sources

* Extend range of supported sub-second polling intervals

* Get/set IPv4 destination/source address of NTP packets on FreeBSD

* Make burst options and command useful with short polling intervals

* Modify auto_offline option to activate when sending request failed

* Respond from interface that received NTP request if possible

* Add onoffline command to switch between online and offline state

  according to current system network configuration

* Improve example NetworkManager dispatcher script

Bug fixes

---------

* Avoid waiting in Linux getrandom system call

* Fix PPS support on FreeBSD and NetBSD

New in version 3.3

==================

Enhancements

------------

* Add burst option to server/pool directive

* Add stratum and tai options to refclock directive

* Add support for Nettle crypto library

* Add workaround for missing kernel receive timestamps on Linux

* Wait for late hardware transmit timestamps

* Improve source selection with unreachable sources

* Improve protection against replay attacks on symmetric mode

* Allow PHC refclock to use socket in /var/run/chrony

* Add shutdown command to stop chronyd

* Simplify format of response to manual list command

* Improve handling of unknown responses in chronyc

Bug fixes

---------

* Respond to NTPv1 client requests with zero mode

* Fix -x option to not require CAP_SYS_TIME under non-root user

* Fix acquisitionport directive to work with privilege separation

* Fix handling of socket errors on Linux to avoid high CPU usage

* Fix chronyc to not get stuck in infinite loop after clock step

New in version 3.2

==================

Enhancements

------------

* Improve stability with NTP sources and reference clocks

* Improve stability with hardware timestamping

* Improve support for NTP interleaved modes

* Control frequency of system clock on macOS 10.13 and later

* Set TAI-UTC offset of system clock with leapsectz directive

* Minimise data in client requests to improve privacy

* Allow transmit-only hardware timestamping

* Add support for new timestamping options introduced in Linux 4.13

* Add root delay, root dispersion and maximum error to tracking log

* Add mindelay and asymmetry options to server/peer/pool directive

* Add extpps option to PHC refclock to timestamp external PPS signal

* Add pps option to refclock directive to treat any refclock as PPS

* Add width option to refclock directive to filter wrong pulse edges

* Add rxfilter option to hwtimestamp directive

* Add -x option to disable control of system clock

* Add -l option to log to specified file instead of syslog

* Allow multiple command-line options to be specified together

* Allow starting without root privileges with -Q option

* Update seccomp filter for new glibc versions

* Dump history on exit by default with dumpdir directive

* Use hardening compiler options by default

Bug fixes

---------

* Don't drop PHC samples with low-resolution system clock

* Ignore outliers in PHC tracking, RTC tracking, manual input

* Increase polling interval when peer is not responding

* Exit with error message when include directive fails

* Don't allow slash after hostname in allow/deny directive/command

* Try to connect to all addresses in chronyc before giving up

New in version 3.1

==================

Enhancements

------------

* Add support for precise cross timestamping of PHC on Linux

* Add minpoll, precision, nocrossts options to hwtimestamp directive

* Add rawmeasurements option to log directive and modify measurements

  option to log only valid measurements from synchronised sources

* Allow sub-second polling interval with NTP sources

Bug fixes

---------

* Fix time smoothing in interleaved mode

New in version 3.0

==================

Enhancements

------------

* Add support for software and hardware timestamping on Linux

* Add support for client/server and symmetric interleaved modes

* Add support for MS-SNTP authentication in Samba

* Add support for truncated MACs in NTPv4 packets

* Estimate and correct for asymmetric network jitter

* Increase default minsamples and polltarget to improve stability

  with very low jitter

* Add maxjitter directive to limit source selection by jitter

* Add offset option to server/pool/peer directive

* Add maxlockage option to refclock directive

* Add -t option to chronyd to exit after specified time

* Add partial protection against replay attacks on symmetric mode

* Don't reset polling interval when switching sources to online state

* Allow rate limiting with very short intervals

* Improve maximum server throughput on Linux and NetBSD

* Remove dump files after start

* Add tab-completion to chronyc with libedit/readline

* Add ntpdata command to print details about NTP measurements

* Allow all source options to be set in add server/peer command

* Indicate truncated addresses/hostnames in chronyc output

* Print reference IDs as hexadecimal numbers to avoid confusion with

  IPv4 addresses

Bug fixes

---------

* Fix crash with disabled asynchronous name resolving

New in version 2.4.1

====================

Bug fixes

---------

* Fix processing of kernel timestamps on non-Linux systems

* Fix crash with smoothtime directive

* Fix validation of refclock sample times

* Fix parsing of refclock directive

New in version 2.4

==================

Enhancements

------------

* Add orphan option to local directive for orphan mode compatible with ntpd

* Add distance option to local directive to set activation threshold

  (1 second by default)

* Add maxdrift directive to set maximum allowed drift of system clock

* Try to replace NTP sources exceeding maximum distance

* Randomise source replacement to avoid getting stuck with bad sources

* Randomise selection of sources from pools on start

* Ignore reference timestamp as ntpd doesn't always set it correctly

* Modify tracking report to use same values as seen by NTP clients

* Add -c option to chronyc to write reports in CSV format

* Provide detailed manual pages

Bug fixes

---------

* Fix SOCK refclock to work correctly when not specified as last refclock

* Fix initstepslew and -q/-Q options to accept time from own NTP clients

* Fix authentication with keys using 512-bit hash functions

* Fix crash on exit when multiple signals are received

* Fix conversion of very small floating-point numbers in command packets

Removed features

----------------

* Drop documentation in Texinfo format

New in version 2.3

==================

Enhancements

------------

* Add support for NTP and command response rate limiting

* Add support for dropping root privileges on Mac OS X, FreeBSD, Solaris

* Add require and trust options for source selection

* Enable logchange by default (1 second threshold)

* Set RTC on Mac OS X with rtcsync directive

* Allow binding to NTP port after dropping root privileges on NetBSD

* Drop CAP_NET_BIND_SERVICE capability on Linux when NTP port is disabled

* Resolve names in separate process when seccomp filter is enabled

* Replace old records in client log when memory limit is reached

* Don't reveal local time and synchronisation state in client packets

* Don't keep client sockets open for longer than necessary

* Ignore poll in KoD RATE packets as ntpd doesn't always set it correctly

* Warn when using keys shorter than 80 bits

* Add keygen command to generate random keys easily

* Add serverstats command to report NTP and command packet statistics

Bug fixes

---------

* Fix clock correction after making step on Mac OS X

* Fix building on Solaris

New in version 2.2.1

====================

Security fixes

--------------

* Restrict authentication of NTP server/peer to specified key (CVE-2016-1567)

New in version 2.2

==================

Enhancements

------------

* Add support for configuration and monitoring over Unix domain socket

  (accessible by root or chrony user when root privileges are dropped)

* Add support for system call filtering with seccomp on Linux (experimental)

* Add support for dropping root privileges on NetBSD

* Control frequency of system clock on FreeBSD, NetBSD, Solaris

* Add system leap second handling mode on FreeBSD, NetBSD, Solaris

* Add dynamic drift removal on Mac OS X

* Add support for setting real-time priority on Mac OS X

* Add maxdistance directive to limit source selection by root distance

  (3 seconds by default)

* Add refresh command to get new addresses of NTP sources

* Allow wildcard patterns in include directive

* Restore time from driftfile with -s option if later than RTC time

* Add configure option to set default hwclockfile

* Add -d option to chronyc to enable debug messages

* Allow multiple addresses to be specified for chronyc with -h option

  and reconnect when no valid reply is received

* Make check interval in waitsync command configurable

Bug fixes

---------

* Fix building on NetBSD, Solaris

* Restore time from driftfile with -s option if reading RTC failed

Removed features

----------------

* Drop support for authentication with command key (run-time configuration

  is now allowed only for local users that can access the Unix domain socket)

New in version 2.1.1

====================

Bug fixes

---------

* Fix clock stepping by integer number of seconds on Linux

New in version 2.1

==================

Enhancements

------------

* Add support for Mac OS X

* Try to replace unreachable and falseticker servers/peers specified

  by name like pool sources

* Add leaponly option to smoothtime directive to allow synchronised

  leap smear between multiple servers

* Use specific reference ID when smoothing served time

* Add smoothing command to report time smoothing status

* Add smoothtime command to activate or reset time smoothing

Bug fixes

---------

* Fix crash in source selection with preferred sources

* Fix resetting of time smoothing

* Include packet precision in peer dispersion

* Fix crash in chronyc on invalid command syntax

New in version 2.0

==================

Enhancements

------------

* Update to NTP version 4 (RFC 5905)

* Add pool directive to specify pool of NTP servers

* Add leapsecmode directive to select how to correct clock for leap second

* Add smoothtime directive to smooth served time and enable leap smear

* Add minsources directive to set required number of selectable sources

* Add minsamples and maxsamples options for all sources

* Add tempcomp configuration with list of points

* Allow unlimited number of NTP sources, refclocks and keys

* Allow unreachable sources to remain selected

* Improve source selection

* Handle offline sources as unreachable

* Open NTP server port only when necessary (client access is allowed by

  allow directive/command or peer/broadcast is configured)

* Change default bindcmdaddress to loopback address

* Change default maxdelay to 3 seconds

* Change default stratumweight to 0.001

* Update adjtimex synchronisation status

* Use system headers for adjtimex

* Check for memory allocation errors

* Reduce memory usage

* Add configure options to compile without NTP, cmdmon, refclock support

* Extend makestep command to set automatic clock stepping

Bug fixes

---------

* Add sanity checks for time and frequency offset

* Don't report synchronised status during leap second

* Don't combine reference clocks with close NTP sources

* Fix accepting requests from configured sources

* Fix initial fallback drift setting

New in version 1.31.1

=====================

Security fixes

--------------

* Protect authenticated symmetric NTP associations against DoS attacks

  (CVE-2015-1853)

* Fix access configuration with subnet size indivisible by 4 (CVE-2015-1821)

* Fix initialization of reply slots for authenticated commands (CVE-2015-1822)

New in version 1.31

===================

Enhancements

------------

* Support operation in other NTP eras (next era begins in 2036),

  NTP time is mapped to [-50, +86] years around build date by default

* Restore time from driftfile with -s when RTC is missing/unsupported

* Close connected client sockets when not waiting for reply

* Use one client socket with random port when acquisitionport is 0

* Use NTP packets instead of UDP echo for presend

* Don't adjust polling interval when sending fails

* Allow binding to addresses that don't exist yet

* Ignore measurements around leap second

* Improve detection of unexpected time jumps

* Include example of logrotate configuration, systemd services and

  NetworkManager dispatcher script

Bug fixes

---------

* Reconnect client sockets for each request to follow changes

  in network configuration automatically

* Restart timer when polling interval is changed on reset

New in version 1.30

===================

Enhancements

------------

* Add asynchronous name resolving with POSIX threads

* Add PTP hardware clock (PHC) refclock driver

* Add new generic clock driver to slew by adjusting frequency only

  (without kernel PLL or adjtime) and use it on Linux

* Add rtcautotrim directive to trim RTC automatically

* Add hwclockfile directive to share RTC LOCAL/UTC setting with hwclock

* Add maxslewrate directive to set maximum allowed slew rate

* Add maxdispersion option for refclocks

* Add -q/-Q options to set clock/print offset once and exit

* Allow directives to be specified on chronyd command line

* Replace frequency scaling in Linux driver with retaining of tick

* Try to detect unexpected forward time jumps and reset state

* Exit with non-zero code when maxchange limit is reached

* Improve makestep to not start and stop slew unnecessarily

* Change default corrtimeratio to 3.0 to improve frequency accuracy

* Announce leap second only on last day of June and December

* Use separate connected client sockets for each NTP server

* Remove separate NTP implementation used for initstepslew

* Limit maximum minpoll set by KoD RATE to default maxpoll

* Don't send NTP requests with unknown key

* Print warning when source is added with unknown key

* Take leap second in PPS refclock from locked source

* Make reading of RTC for initial trim more reliable

* Don't create cmdmon sockets when cmdport is 0

* Add configure option to set default user to drop root privileges

* Add configure option to compile with debug messages

* Print debug messages when -d is used more than once

* Change format of messages written to terminal with -d

* Write fatal messages also to stderr with -n

* Use IP_RECVERR socket option in chronyc to not wait unnecessarily

* Shorten default chronyc timeout for localhost

* Change default hostname in chronyc from localhost to 127.0.0.1

* Print error message on invalid syntax with all chronyc commands

* Include simulation test suite using clknetsim

Bug fixes

---------

* Fix crash when selecting with multiple preferred sources

* Fix frequency calculation with large frequency offsets

* Fix code writing drift and RTC files to compile correctly

* Fix -4/-6 options in chronyc to not reset hostname set by -h

* Fix refclock sample validation with sub-second polling interval

* Set stratum correctly with non-PPS SOCK refclock and local stratum

* Modify dispersion accounting in refclocks to prevent PPS getting

  stuck with large dispersion and not accepting new samples

New in version 1.29.1

=====================

Security fixes

--------------

* Modify chronyc protocol to prevent amplification attacks (CVE-2014-0021)

  (incompatible with previous protocol version, chronyc supports both)

New in version 1.29

===================

Security fixes

--------------

* Fix crash when processing crafted commands (CVE-2012-4502)

  (possible with IP addresses allowed by cmdallow and localhost)

* Don't send uninitialized data in SUBNETS_ACCESSED and CLIENT_ACCESSES

  replies (CVE-2012-4503) (not used by chronyc)

Other changes

-------------

* Drop support for SUBNETS_ACCESSED and CLIENT_ACCESSES commands

New in version 1.28

===================

* Combine sources to improve accuracy

* Make config and command parser strict

* Add -a option to chronyc to authenticate automatically

* Add -R option to ignore initstepslew and makestep directives

* Add generatecommandkey, minsamples, maxsamples and user directives

* Improve compatibility with NTPv1 and NTPv2 clients

* Create sockets only in selected family with -4/-6 option

* Treat address bind errors as non-fatal

* Extend tracking log

* Accept float values as initstepslew threshold

* Allow hostnames in offline, online and burst commands

* Fix and improve peer polling

* Fix crash in config parsing with too many servers

* Fix crash with duplicated initstepslew address

* Fix delta calculation with extreme frequency offsets

* Set local stratum correctly

* Remove unnecessary adjtimex calls

* Set paths in documentation by configure

* Update chrony.spec

New in version 1.27

===================

* Support for stronger keys via NSS or libtomcrypt library

* Support reading leap second data from tz database

* Support for precise clock stepping on Linux

* Support for nanoseconds in SHM refclock

* Make offset corrections smoother on Linux

* Make transmit timestamps random below clock precision

* Add corrtimeratio and maxchange directives

* Extend tracking, sources and activity reports

* Wait in foreground process until daemon is fully initialized

* Fix crash with slow name resolving

* Fix iburst with jittery sources

* Fix offset stored in rtc data right after trimrtc

* Fix crash and hang with RTC or manual samples

* Don't use readonly adjtime on Linux kernels before 2.6.28 

* Changed chronyc protocol, incompatible with older versions

New in version 1.26

===================

* Add compatibility with Linux 3.0 and later

* Use proper source address in NTP replies on multihomed IPv6 hosts

* Accept NTP packets with versions 4, 3 and 2

* Cope with unexpected backward time jumps

* Don't reset kernel frequency on start without drift file

* Retry on permanent DNS error by default

* Add waitsync command

New in version 1.25

===================

* Improve accuracy with NTP sources

* Improve accuracy with reference clocks

* Improve polling interval adjustment

* Improve stability with temporary asymmetric delays

* Improve source selection

* Improve initial synchronisation

* Add delayed server name resolving

* Add temperature compensation

* Add nanosecond slewing to Linux driver

* Add fallback drifts

* Add iburst, minstratum, maxdelaydevratio, polltarget,

  prefer, noselect options

* Add rtcsync directive to enable Linux 11-minute mode

* Add reselectdist, stratumweight, logbanner, maxclockerror,

  include directives

* Add -n option to not detach daemon from terminal

* Fix pidfile directive

* Fix name resolving with disabled IPv6 support

* Fix reloading sample histories with reference clocks

* Fix crash with auto_offline option

* Fix online command on auto_offline sources

* Fix file descriptor leaks

* Increase burst polling interval and stop on KoD RATE

* Set maxupdateskew to 1000 ppm by default

* Require password for clients command

* Update drift file at most once per hour

* Use system headers for Linux RTC support

* Reduce default chronyc timeout and make it configurable

* Avoid large values in chronyc sources and sourcestats output

* Add reselect command to force reselecting best source

* Add -m option to allow multiple commands on command line

New in version 1.24

===================

Security fixes

--------------

* Don't reply to invalid cmdmon packets (CVE-2010-0292)

* Limit client log memory size (CVE-2010-0293)

* Limit rate of syslog messages (CVE-2010-0294)

Bug fixes/Enhancements

----------------------

* Support for reference clocks (SHM, SOCK, PPS drivers)

* IPv6 support

* Linux capabilities support (to drop root privileges)

* Memory locking support on Linux

* Real-time scheduler support on Linux

* Leap second support on Linux

* Support for editline library

* Support for new Linux readonly adjtime

* NTP client support for KoD RATE

* Read kernel timestamps for received NTP packets

* Reply to NTP requests with correct address on multihomed hosts

* Retry name resolving after temporary failure

* Fix makestep command, make it available on all systems

* Add makestep directive for automatic clock stepping

* Don't require _bigadj kernel symbol on NetBSD

* Avoid blocking read in Linux RTC driver

* Support for Linux on S/390 and PowerPC

* Fix various bugs on 64-bit systems

* Fix valgrind errors and compiler warnings

* Improve configure to support common options and variables

* Improve status checking and printing in chronyc

* Return non-zero exit code on errors in chronyc

* Reduce request timeout in chronyc

* Print estimated offset in sourcestats

* Changed chronyc protocol, incompatible with older versions

New in version 1.23

===================

* Support for MIPS, x86_64, sparc, alpha, arm, FreeBSD

* Fix serious sign-extension error in handling IP addresses

* RTC support can be excluded at compile time

* Make sources gcc-4 compatible

* Fix various compiler warnings

* Handle fluctuations in peer distance better.

* Fixed handling of stratum zero.

* Fix various problems for 64-bit systems

* Flush chronyc output streams after each command, to allow it to be driven

  through pipes

* Manpage improvements

Version 1.22

============

This release number was claimed by a release that Mandriva made to patch

important bugs in 1.21.  The official numbering has jumped to 1.23 as a

consequence.

New in version 1.21

===================

* Don't include Linux kernel header files any longer : allows chrony to compile

  on recent distros.

* Stop trying to use RTC if continuous streams of error messages would occur

  (Linux with HPET).

New in version 1.20

===================

* Many small tidy-ups and security improvements

* Improve documentation (RTC support in post 2.0 kernels)

* Remove trailing \n from syslog messages

* Syslog messages now include IP and port number when packet cannot be sent.

* Added the "acquisitionport" directive.  (Kalle Olavi Niemitalo)

* Use uname(2) instead of /proc/version to get kernel version.

* Merge support for Linux on Alpha

* Merge support for 64bit architectures

* Don't link -lm if it's not needed

* Fix Solaris build (broken by 64bit change)

* Add detection of Linux 2.5

* Allow arbitrary value of HZ in Linux kernel

* Fix for chrony.spec on SuSE (Paul Elliot)

* Fix handling of initstepslew if no servers are listed (John Hasler)

* Fix install rule in Makefile if chronyd is in use (Juliusz Chroboczek)

* Replace sprintf by snprintf to remove risk of buffer overrun (John Hasler)

* Add --help to configure script

New in version 1.19

===================

* Auto-detect kernel's timer interrupt rate (so-called 'HZ') when chronyd

  starts instead of relying on compiled-in value.

* Fix 2 bugs in function that creates the directory for the log and dump files.

* Amended webpage URL and contact details.

* Generate more informative syslog messages before exiting on failed

  assertions.

* Fix bugs in clamping code for the tick value used when slewing a large

  offset.

* Don't chown files to root during install (should be pointless, and makes RPM

  building awkward as ordinary user.)

* Include chrony.spec file for building RPMs

New in version 1.18

===================

* Amend homepage and mailing list information to chrony.sunsite.dk

* Delete pidfile on exit from chronyd.

* Improvements to readline interface to chronyc

* Only generate syslog message when synchronisation is initially lost (instead

  of on every failed synchronisation attempt)

* Use double fork approach when initialising daemon.

* More things in contrib directory.

* New options to help package builders: --infodir/--mandir for configure, and

  DESTDIR=xxx for make.  (See section 2.2 of chrony.txt for details).

* Changed the wording of the messages generated by mailonchange and logchange

  directives.

New in version 1.17

===================

* Port to NetBSD

* Configuration supports Linux on PPC

* Fix compilation warnings

* Several documentation improvements

* Bundled manpages (taken from the 'missing manpages project')

* Cope with lack of bzero function for Solaris 2.3 systems

* Store chronyd's pid in a file (default /var/run/chronyd.pid) and check if

  chronyd may already be running when starting up.  New pidfile directive in

  configuration file.

* Any size subnet is now allowed in allow and deny commands.  (Example:

  6.7.8/20 or 6.7.8.x/20 (any x) mean a 20 bit subnet).

* The environment variables CC and CFLAGS passed to configure can now be used

  to select the compiler and optimisation/debug options to use

* Write syslog messages when chronyd loses synchronisation.

* Print GPL text when chronyc is run.

* Add NTP broadcast server capability (new broadcast directive).

* Add 'auto_offline' option to server/peer (conf file) or add server/peer (via

  chronyc).

* Add 'activity' command to chronyc, to report how many servers/peers are

  currently online/offline.

* Fix long-standing bug with how the system time quantum was calculated.

* Include support for systems with HZ!=100 (HZ is the timer interrupt

  frequency).

* Include example chrony.conf and chrony.keys files (examples subdirectory).

* Include support for readline in chronyc.

New in version 1.16.1

=====================

* Fix compilation problem on Linux 2.4.13 (spinlock.h / spinlock_t)

New in version 1.16

===================

* More informative captions for 'sources' and 'sourcestats' commands in chronyc

  (use 'sources -v' and 'sourcestats -v' to get them).

* Correct behaviour for Solaris versions>=2.6 (dosynctodr not required on these

  versions.)

* Remove some compiler warnings (Solaris)

* If last line of keys file doesn't have end-of-line, don't truncate final

  character of that key.

* Change timestamp format used in logfiles to make it fully numeric (to aid

  importing data into spreadsheets etc)

* Minor documentation updates and improvements.

New in version 1.15

===================

* Add contributed change to 'configure' to support Solaris 2.8 on x86

* Workaround for assertion failure that arises if two received packets occur

  close together. (Still need to find out why this happens at all.)

* Hopefully fix problem where fast slewing was incompatible with machines

  that have a large background drift rate (=> tick value went out of range

  for adjtimex() on Linux.)

* Fix rtc_linux.c compile problems with 2.4.x kernel include files.

* Include support for RTC device not being at /dev/rtc (new rtcdevice directive

  in configuration file).

* Include support for restricting network interfaces for commands (new

  bindcmdaddress directive in configuration file)

* Fix potential linking fault in pktlength.c (use of CROAK macro replaced by

  normal assert).

* Add some material on bug reporting + contributing to the chrony.texi file

* Made the chrony.texi file "Vim6-friendly" (removed xrefs on @node lines,

  added folding markers to chapters + sections.)

* Switched over to GPL for the licence

New in version 1.14

===================

* Fix compilation for certain other Linux distributions (including Mandrake

  7.1)

New in version 1.13

===================

* Fixed compilation problems on Redhat/SuSE installations with recent 2.2.x

  kernels.

* Minor tidy-ups and documentation enhancements.

* Add support for Linux 2.4 kernels

New in version 1.12

===================

* Trial fix for long-standing bug in Linux RTC estimator when system time is

  slewed.

* Fix bug in chronyc if -h is specified without a hostname

* Fixes to logging various error conditions when operating in daemon mode.

* More stuff under contrib/

* Changes to README file (e.g. about the new chrony-users mailing list)

New in version 1.11a

====================

* Minor changes to contact details

* Minor changes to installation details (chrony subdirectory under doc/)

New in version 1.11

===================

* Improve robustness of installation procedure

* Tidy up documenation and contact details

* Distribute manual as .txt rather than as .ps

* Add -n option to chronyc to work with numeric IP addresses rather than

  names.

* Add material in contrib subdirectory

* Improve robustness of handling drift file and RTC coefficients file

* Improve robustness of regression algorithm

New in version 1.1

==================

Bug fixes

---------

* Made linear regression more resistant to rounding errors (old one

  occasionally generated negative variances which made everything go

  haywire).  Trap infinite or 'not-a-number' values being used to

  alter system clock to increase robustness further.

Other changes/Enhancements

--------------------------

* Support for Linux 2.1 and 2.2 kernels

* New command 'makestep' in chronyc to immediately jump the system

  time to match the NTP estimated time (Linux only) - a response to

  systems booting an hour wrong after summertime/wintertime changes,

  due to RTCs running on local time.  Needs extending to Sun driver

  files too.

* New directives 'logchange' and 'mailonchange' to log to syslog or

  email to a specific address respectively if chronyd detects a clock

  offset exceeding a defined threshold.

* Added capability to log all client/peer NTP accesses and command

  accesses (can be turned off with conf file directive 'noclientlog').

  Added 'clients' command to chronyc to display this data.

* Improved manual mode to use robust regression rather than 2 point

  fit.

* Added 'manual list' and 'manual delete' commands to chronyc to

  allow display of entered timestamps and discretionary deletion of

  outliers.

* If host goes unsynchronised the dummy IP address 0.0.0.0 is detected

  to avoid attempting a reverse name lookup (to stop dial on demand IP

  links from being started)

* Changed chronyc/chronyd protocol so messages are now all variable

  length.  Saves on network bandwidth particularly for large replies

  from chronyd to chronyc (to support the clients command).

* Added bindaddress directive to configuration file, to give

  additional control over limiting which hosts can access the local

  server.

* Groundwork done for a port to Windows NT to compile with Cygwin

  toolkit.  chronyc works (to monitor another host).  sys_winnt.c

  needs finishing to use NT clock control API.  Program structure

  needs adapting to use Windows NT service functions, so it can be

  started at boot time.  Hopefully a Windows NT / Cygwin guru with

  some spare time can take this port over :-)

New in version 1.02

===================

Bug fixes

---------

* Fix error messages in chronyc if daemon is not reachable.

* Fix config file problem for 'allow all' and 'deny all' without a

  trailing machine address.

* Remove fatal failed assertion if command socket cannot be read from

  in daemon.

* Rewrote timezone handling for Linux real time clock, following

  various reported problems related to daylight saving.

Other changes/Enhancements

--------------------------

* Configure script recognizes BSD/386 and uses SunOS 4.1 driver for

  it.

* Log files now print date as day-month-year rather than as a day

  number.  Milliseconds removed from timestamps of logged data.

  Banners included in file to give meanings of columns.

* Only do 1 initial step (followed by a trimming slew) when

  initialising from RTC on Linux (previously did 2 steps).

New in version 1.01

===================

Bug fixes

---------

* Handle timezone of RTC correctly with respect to daylight saving

  time

* Syntax check the chronyc 'local' command properly

* Fixed assertion failed fault in median finder (used by RTC

  regression fitting)

Other changes/Enhancements

--------------------------

* Log selection of new NTP reference source to syslog.

* Don't zero-pad IP address fields

* Add new command to chronyc to allow logfiles to be cycled.

* Extend allow/deny directive syntax in configuration file to so

  directive can apply to all hosts on the Internet.

* Tidy up printout of timestamps to make it clear they are in UTC

* Make 'configure' check the processor type as well as the operating

  system.