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monitoring-plugins 2.2-6
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This file documents the major additions and syntax changes between releases.

2.2 29th November 2016
	ENHANCEMENTS
	The check_http -S/--ssl option now accepts the arguments "1.1" and "1.2"
	  to force TLSv1.1 and TLSv1.2 connections, respectively
	The check_http -S/--ssl option now allows for specifying the desired
	  protocol with a "+" suffix to also accept newer versions
	Let check_http check HTTPS web sites via proxies
	check_http: add timeout to performance data as max value
	check_http: report certificate expiry date in UTC
	check_snmp: add IPv6 support
	check_snmp's performance data now also includes warning/critical
	  thresholds
	New check_snmp -N option to specify SNMPv3 context name
	Let check_smtp's -D option imply -S
	Let check_smtp's -e option match against the full SMTP response
	check_dig: expected response is now case-insensitive
	New check_mailq -s option which tells the plugin to use sudo(8)
	New check_nt -l parameters: seconds|minutes|hours|days
	New -W/-C option for check_ldap to check number of entries
	check_users: add support for range thresholds
	check_fping now auto-detects IPv6 addresses
	check_radius now supports the radcli library
	Support OpenSSL 1.1

	FIXES
	check_http: fix host header port handling
	Let check_real terminate lines with CRLF when talking to the server, as
	  mandated by RFC 2326
	Fix check_procs on HP-UX
	check_smtp's -e/--expect option can now be combined with -S/--starttls
	Fix incorrect performance data thresholds emitted by check_ups
	Don't let check_procs miss some processes on busy Solaris systems

	WARNINGS
	The format of the performance data emitted by check_mrtgtraf has been
	  changed to comply with the development guidelines
	check_ssh now returns CRITICAL for protocol/version errors
	If a plugin is invoked with -h/--help or -V/--version, the exit status
	  is now UNKNOWN
	The superseeded check_ntp.pl was removed, please use check_ntp_peer or
	  check_ntp_time instead

2.1.2 16th October 2015
	FIXES
	Fix incorrect performance data thresholds emitted by check_ups
	Fix check_dhcp's option parsing to not crash with certain arguments
	Fix check_snmp using correct timeout

2.1.1 2nd December 2014
	FIXES
	Fix check_ntp's jitter checking
	Fix check_ntp's handling of invalid server responses
	Fix check_apt's handling of invalid regular expressions
	Fix check_real's server response processing
	Fix backslash escaping in check_tcp's --help output

2.1 15th October 2014
	ENHANCEMENTS
	New check_hpjd -p option for port specification
	New ./configure --with-qmail-qstat-command option to specify the path to
	  qmail-qstat(8)
	New check_ifstatus -n option to ignore interfaces by name
	check_ntp_peer has now specific state output for each metric
	New check_mysql -n option to ignore authentication failures
	Added IP and port or socket name to error messages
	New check_ntp_time -o option to add expected offset
	check_disk shows now troubled partions in verbose mode
	check_dig has now support for drill and dig
	check_dig has now support for -6 option
	Add performance data to check_file_age

	FIXES
	Fix check_jabber to work with Openfire servers
	Fix check_oracle bad string matching when testing TNS server
	Fixed check_ifstatus performance data output
        Fixed expire time output for sslutils
	check_dns now verifies if the answer is returning from the queried
	  server
	Fix check_by_ssh to accept --hostname as argument

	WARNINGS
	This release doesn't ship with an RPM spec file, please contribute to
	  PR #1283 if you are interested in it

2.0 11th July 2014
	ENHANCEMENTS
	check_mailq now supports auto detection of qmail, postfix, exim and nullmailer with
	  fallback to sendmail
	check_ide_smart now defaults to plugin output, original output appended with -v
	Extra-Opts are now enabled by default, see:
	  https://www.monitoring-plugins.org/doc/extra-opts.html
	check_swap now supports a configurable state when there is no swap
	check_radius now supports the FreeRADIUS Client library
	New check_mysql_query -f option to specify a client options file
	New check_mysql_query -g option to specify a client options group
	Add performance data to check_mysql_query
	New check_file_age -i/--ignore-missing option to return OK on nonexistent files
	Make check_ping, check_users, and check_disk work on Windows
	New check_ssh -P option to specify the expected SSH protocol version
	check_dns now emits the warning and critical thresholds with the performance data

	FIXES
	Don't let e.g. check_http's -C option reset SSL version if e.g. -S 1 -C 5 is specified
	Don't have check_http's -N option expect an argument
	check_ide_smart could disable offline auto tests but could not re-enable them.
	  For this reason all SMART command modes have been disabled.
	check_dig: fix wrong IPv6 arguments order
	check_dig: make sure not to give up too early when a timeout is specified with -t
	check_log: don't stumble over log lines that include a "%" character
	check_nt: add UPTIME to perfdata
	Handle SNMPv3 noAuthNoPriv properly with check_snmp
	Fix compilation with GnuTLS

	WARNINGS
	New default installation prefix: /usr/local instead of /usr/local/nagios
	check_snmp now evaluates negative values properly, which means it might return CRITICAL
	  in cases where it used to return OK. If this is undesired, the warning/critical
	  threshold(s) must be fixed by specifying e.g. ~:100 instead of 100
	check_procs now ignores its parent process to avoid unexpected results when invoked via
	  certain shells
	utils.sh no longer defines ECH
	check_ide_smart -q/--quiet and -n/--nagios (Nagios-compatible output) are now deprecated
	  but accepted for backward-compatibility
	check_ide_smart -0/--auto-off, -1/--auto-on and -i/--immediate: options have
	  been disabled because they were broken
	State retention: the NAGIOS_PLUGIN_STATE_DIRECTORY environment variable has been
	  renamed MP_STATE_PATH. The old variable will continue to work in v2.0.x
	Add the UID of the invoking user to the state retention file path. This helps solving
	  permission issues when different users run the same plugin
	check_swap used to allow returning OK on a system without swap when only percent thresholds
	  were used. This is no longer the case and one must now use -n/--no-swap=<state>
	The Perl and Shell plugins now use the PATH specified via ./configure's --trusted-path
	  option, or "/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin" by default

1.5 2nd October 2013
	ENHANCEMENTS
	New check_dbi plugin for checking an (SQL) database using DBI
	Let OpenSSL load its configuration file (see the OPENSSL_config(3) man page)
	Add performance data to check_apt
	Add performance data to check_procs
	Added -4/-6 options to check_dig
	New check_oracle --connect option to perform real login
	New check_nagios -t option to override the default timeout
	New check_disk -f/--freespace-ignore-reserved option to ignore space reserved for root
	New check_disk -N/--include-type option to limit the filesystem types to check
	Allow for building the plugins in parallel
	Add --without-{dbi,ldap,radius} options to ./configure
	Made Verbose output of check_sensors compliant
	New switch -E/--extended-perfdata for check_http to print additional performance data
	New check_http -d option to specify a string to expect within the response headers
	New check_http -J/-K options for client certificate authentication support
	Add support for executing queries to check_pgsql
	Let check_pgsql accept a UNIX socket directory as hostname
	New check_pgsql -o option to specify additional connection parameters
	New check_fping -S option to specify the source IP address
	New check_fping -I option to specify the interface to bind to
	Let check_fping support IPv6
	New check_procs -k option to ignore kernel threads (on Linux)
	Let check_procs use /proc/<PID>/exe (if available) instead of getpid(2), unless -T is specified
	Let check_mysql support SSL
	Let check_mysql add perfromance metrics for all checks
	New check_mysql -f option to specify a client options file
	New check_mysql -g option to specify a client options group
	New check_snmp --offset option to allow for adding/substracting an offset value to sensor data
	Let check_snmp support an arbitrary number of OIDs
	Let check_ide_smart support NetBSD

	FIXES
	Change the MAIL FROM command generated by check_smtp to be RFC compliant
	Fix compilation of check_http without SSL support
	Fix check_snmp reversed threshold ranges (backward-compatibility)
	Fix check_snmp memory violation when using more than 8 oids
	Fix check_apt security regular expression
	Fix check_http handling extra header (-k) containing semicolons
	Fix check_apt handling unknown exit codes from apt-get
	Fix deprecated imports of check_nmap.py

	WARNINGS
	check_http behaviour of -k/--header changed since it does not seperate multiple headers by semicolons anymore. Use multiple -k switches instead.
	check_http's --proxy_authorization option is now called --proxy-authorization (it was always documented this way)
	The contrib directory has been removed from this distribution

1.4.16 27th June 2012
	ENHANCEMENTS
	check_nt UPTIME accepts warning/critical thresholds
	check_disk_smb now allows spaces in share names (#990948, #1370031, Debian #601699)
	check_http now uses standard threshold functions (enables floating point and ranges)
	check_http now checks for and prints the certificate cn (hostname) in SSL certificate checks
	check_http now supports an optional -S/--ssl value to choose the SSL protocol version (#3066166)
	Add perfdata to check_ssh (#3244097)
	New option to check_smtp to ignore failures when sending QUIT (#3358348)
	New check_by_ssh -F option which allows for specifying an alternative ssh_config(5) file (#2895334)
	check_sensors now detects faulty sensors unless --ignore-fault is specified
	utils.sh now provides a check_range function
	Improved the performance of check_users
	Add perfdata to check_disk_smb (Debian #654259)
	Updated Nagios::Plugin perl module
	Add warning threshold to certificate expiration checks of check_tcp/http/smtp
	Add --perf-oids option for check_snmp

	FIXES
	Fix check_disk free space calculation if blocksizes differ within a disk group (#2973603)
	check_disk_smb now handles NT_STATUS_ACCESS_DENIED properly (Debian #601696)
	Make check_snmp work more like v1.4.14 with regard to using special values (Timeticks, STRING) as numeric thresholds
	Fix check_ldap overriding the port when --ssl was specified after -p
	Fix check_procs where regex input of '|' would get displayed in output - now replaced with ','
	Fix segfault in check_host when hostname returns multiple IP addresses
	Fix check_smtp and check_tcp where duplicate messages were displayed for certificate errors
	Fix check_ping's parsing of ping6(1) output (#1894850, Debian #514588, Debian #662638)
	Fix a check_dhcp bug which was triggered by checking Windows 2003 DHCP servers (#3503921)
	Disable RFC4507 support, to work around SSL negotiation issues with (at least) some Tomcat versions
	Fix performance data label containing spaces in check_snmp

1.4.15 27th July 2010
	ENHANCEMENTS
	New check_ntp_peer -m and -n options to check the number of usable time sources ("truechimers")
	New check_disk_smb -a option which allows for specifying the IP address of the remote server
	New check_radius -N option which allows for specifying the value of the NAS-IP-Address attribute
	New check_snmp --rate option to store differences between invocations. Saves state in PREFIX/var/{plugin}
	check_snmp -l label option now also changes the perfdata label. See WARNINGS
	check_snmp has an --invert-search option which reverses status of the string and regexp searches
	check_http now displays the missing search string and the URL in the output when failed (#2999924)
	Updated Nagios::Plugin perl module
	Updated gnulib to June 2010

	FIXES
	Fix check_ircd binding to wrong interface (#668778)
	Add proxy-authorization option to check_http (#1323230, #2863925)
	check_icmp now increment the sequence counter in each packet
	Fix usage of repeated -o options in check_snmp
	Try to detect arguments passed via --with-ping[6]-command and set options accordingly (#2908236)
	Fix memory leak in check_http for large pages (#2957455)
	Fix compilation with GCC 2.96 (#2977105)
	Fix regression introduced in #1867716 where partially valid performance strings would not be printed anymore
	Fix regression in check_http ssl checks on some servers - make SNI an option
	Fix guest mode support in check_disk_smb
	Fix check_disk_smb and check_ircd failures when run via ePN
	check_ldap now allows for specifying an empty LDAP base
	Fix compilation error of pst3 in Solaris 8
	Fix check_radius returning OK on unexpected results (#2911752)
	Fix translations when extra-opts aren't enabled (#2832884)
	Fix parsing of multi-line strings in check_snmp (broken in 1.4.14) and enhance output in such case (#2832451)
	Fix detection of pst3 64-bit compile flags with Sun CC
	Fix cmd_run overwriting the environment, which would break some commands that needed it
	Allow check_ifstatus to accept version=2c - used to only allow version=2
	Fix examples in check_disk, where it implied was possible to suffix unit values to warn/crit parameters

	WARNINGS
	Updated developer documentation to say that performance labels should not have an equals sign or
	single quote in the label
	check_http 1.4.14 introduced SSL SNI support - you now have to enable it explicitly with "--sni"
	check_snmp -l label option is also used for the performance label. This could change history from previous uses

1.4.14 16th September 2009
	check_http has options to specify the HTTP method (#2155152)
	check_users thresholds were not working exactly as documented (>= rather than >)
	Updated tinderbox_build script to point to new tinderbox server
	check_ifoperstatus -n flag now works as expected (#1569488)
	check_ifoperstatus now supports ifType based lookup for ifIndex
	check_ups now sends a LOGOUT string (Debian #387001)
	Extra-opts (C plugins) now allows both '#' and ';' for comments (like N::P)
	Extra-opts (C plugins) does not allow trailing comments anymore (like N::P)
	Fixed dependency issue on libtap when ./configure --enable-libtap used. Warning: will install libtap
	Fixed segfault in extra-opts under some circumstance when reading multiple sections
	Fix long options parsing in check_disk, check_dns, check_mrtg, check_mrtgtraf and check_tcp
	Add missing long options for check_nt (for use with extra-opts)
	check_icmp now reports min and max round trip time perfdata
	Fixed check_http bug where additional headers with redirection caused a segfault (2089159)
	check_disk: make autofs mount paths specified with -p before we determine the mount list
	Fixed buffer overflow in check_ntp/check_ntp_peer (#1999319, Ubuntu #291265)
	Re-bundled libtap as a built-in library (--enable-libtap): detects system library as pre-1.4.13 and does not install the built-in library anymore
	Fixed check_mrtg returning UNKNOWN instead of OK (#2378068)
	Fixed check_http behaviour: all check are now performed as long as a valid response is returned (#1460312)
	check_http --onredirect=sticky follows using the same IP address (#2550208)
	check_http --onredirect=stickyport also follows the same port
	Fixed coredump from check_nt when invalid drive is specified (#2179754)
	Fixed crash from check_nt when -H unspecified or given multiple times (#2731755, Debian #521097)
	Fixed passing of quotes in OID for check_snmp (#1985230)
	Fixed check_http sending HTTP/1.0 with v1.1 headers (#2638765)
	Fixed check_http not timing-out on redirects
	Fixed negate not printing the real timeout in ALRM handler when left to default
	negate timeout result is now configurable
	Fixed segfault in check_mysql with old slaves (#2696823)
	check_nt can return UNKNOWN on timeouts (-u)
	Fixed typos for check_disk
	Fixed check_mysql* not using password set in my.cnf (#2531905) - Specify an empty password explicitly if you need to override it.
	Fixed awk subst.in/subst script path error (#2722832)
	check_http: Add SSL/TLS hostname extension support (SNI) - (#1939022)
	Fixed wrong perfdata label for output traffic in check_mrtgtraf (#2654308)
	Fixed check_by_ssh interpretation of quotes in -C parameter (#1985246, #2268675)
	check_snmp now supports standard threshold ranges and doubles (floating numbers) in thresholds
	check_fping now supports passing target timeout and interval to fping (#2347686)
	Fixed SNMPv3 behaviour of check_ifoperstatus and check_ifstatus. Added -P to define privprotocol (#2343438)
	check_ifoperstatus and check_ifstatus are now more user-friendly in case of missing arguments
	pst3 compile fix for Sun Studio Compiler

1.4.13 25th Sept 2008
	Fix Debian bug #460097: check_http --max-age broken
	Optimised pst3 for systems with large number of processes
	Updated Nagios::Plugin to 0.27
	Fix Debian bug #479013: check_dig's -l is mandatory now (#1986306)
	check_dig now returns CRITICAL instead of WARNING when no answer section is found
	check_procs now captures stderr in external command and adds to plugin output
	check_snmp now only prints perfdata for non numeric values (#1867716)
	check_icmp now supports packet size modification
	check_http -e now accepts a comma-delimited list of expected status codes
	libtap now included with this distribution for easier testing. Run ./configure with --enable-libtap
	check_ntp_peer/check_ntp_time used to show port in --help but ignored the argument - now implemented
	Fix possible segfault in check_ntp_peer with deliberately invalid packets

1.4.12 27th May 2008
	Added ./check_nt -v INSTANCES to count number of instances
	New check_icmp -s option to specify the source IP address
	check_dns now sorts addresses for testing results for more than one returned IP
	Fix segfault in check_ntp_time and (deprecated) check_ntp (#1862300)
	check_disk should now work with large file systems (2TB+) on all archs that supports it
	Fixed check_disk disk usage calculation when using --group=NAME (related to #1348746)
	Fix help text of check_ntp* (#1880095)
	Fix bugs and flaws in best offset server selection of check_ntp_time and (deprecated) check_ntp
	check_ntp_peer now checks for the LI_ALARM flag
	Sync to latest Gnulib (includes new floorf function)
	check_pgsql now successfully builds with postgres lib v8.3 (#1878972)
	check_procs now accepts --ereg-argument-array for a regular expression match to the argument array
	Reverted back to using pst3 for Solaris systems. Fixed issues re: -m64 needed to compile on 64bit systems
	If applicable, Gettext linked dynamically instead of statically
	check_dig can now pass arguments to dig by using -A/--dig-arguments (#1874041/#1889453)
	check_ntp and check_ntp_peer now show proper jitter/stratum thresholds longopts in --help
	check_dns now allow to repeat -a to match multiple possibly returned address (common with load balancers)
	check_mysql and check_radius now try clearing password in processlist just like check_mysql_query
	check_mysql and check_mysql_query now support sockets explicitely (-s, --socket)
	negate now has the ability to replace the status text as well (-s, --substitute)
	Added performance data to check_ping
	Added support for --extra-opts in all C plugins (disabled by default, see configure --help)
	Fixed passive option in check_by_ssh
	On non-skipped stderr, check_by_ssh now returns UNKNOWN or worse (result from command) instead of always UNKNOWN.
	Fix linking against OpenSSL where libdl is required

1.4.11 13th December 2007
	Fixed check_http regression in 1.4.10 where following redirects to
	  relative URLs on virtual hosts failed if both "-H" and "-I" were used
	Merged two new checks that deprecates check_ntp: check_ntp_peer and check_ntp_time.
	  You should read the --help output so see which one is suitable for you. check_ntp_peer
	  implement stratum thresholds support (feature request #1703823).
	check_ntp now returns UNKNOWN instead of WARNING if jitter is unavailable (jitter=-1.000000)
	  as long as the thresholds range include -1. If no offset threshold is specified
	  and the offset is unavailable, will return UNKNOWN as well.
	  NOTE: If jitter thresholds are specified as integers it will return CRITICAL if jitter
	  is "-1" as the default range starts at 0. See Examples in --help output.
	Fixed broken usage2 in check_snmp and check_cluster
	check_cluster now accepts all valid characters in its thresholds ("-", "@", "~")
	Fixed check_disk reporting OK if disk usage grows over 100% (#1348746).
	  The problem happens to be in Gnulib but a workaround have been implemented in check_disk.c
	Fixed check_load argument handling when not passing triplets (#1831890)
	Fixed buffer overflow in check_snmp (CVE-2007-5623)
	Tinderbox builds now runs tests in a verbose mode
	Updated Nagios::Plugin to 0.22
	VPATH problem fixed for compiling plugins-root

1.4.10 28th September 2007
	Fix check_http buffer overflow vulnerability when following HTTP redirects (CVE-2007-5198)
	check_http now explicitly asks HTTP/1.1 servers to close the connection
	  after completion of the response
	Check_ldaps' guessing which secure method to use (starttls vs. ssl on connect)
	  is now deprecated. See --help for further information.
	Check_disk now calls stat() on all filesystems to check. (Old: only the ones selected using -p)
	  A meaningful error message (eg "Stale NFS Handle") is printed if stat fails.
	New check_disk option -L: Only check local filesystems, but call stat() on remote ones, too.
	  Thus accessibility of remote filesystems can be checked without any threshold comparison.
	Check_disk's --help now prints some examples for the new features introduced in 1.4.8
	New check_disk -i/-I option to ignore pathes/partitions based on regular expressions
	New check_disk -A option to select all filesystems explicitly
	WARNING: check_disk's -E option must now be passed before -p or -r/-R arguments
	  Passing -E after -p or -r results in UNKNOWN state, now
	  This is needed due to the new ignore feature
	Fix check_disk bug when mixing case sensitive and case insensitive regex arguments
	New check_dhcp -u/--unicast option for emulating a DHCP relay in order
	  to check DHCP servers on remote networks
	New check_dhcp -m/--mac option which allows for specifying the MAC
	  address to use in the DHCP request
	The check_dhcp -r and -s options now accept host names, too
	Fix possible check_icmp bus errors on some (non-x86/AMD64) platforms
	Fix check_smtp's handling of multiple-packet server responses
	WARNING: Fix for negate which may break existing commands:
	  - stop evaluating command line options through shell twice
	  - enforce a full path for the command to run
	The "negate" utility can now remap custom states
	Check_radius now supports radiusclient-ng
	The (undocumented) positional parameter parsing which check_radius used
	  instead of getopt(3) if 8 arguments were given is no longer available
	Check_by_ssh now supports multiline output
	IPv6 support can now be disabled using ./configure --without-ipv6
	Fix check_ntp now honor ntp flags

1.4.9 4th June 2007
	Inclusion of contrib/check_cluster2 as check_cluster with some improvements
	New/improved -E/--skip-stderr and -S/--skip-stdout options for check_by_ssh
	check_snmp now supports Counter64
	Fix compilation of check_ldap, check_radius and check_pgsql
	check_load can optionally divide by number of cpus
	Fix check_time returning wrong OK when time is before the epoch on some arch
	Make check_http output more consistent
	Fix possible check_http segfaults when following HTTP redirects
	check_snmp don't warn anymore if something is printed on stderr
	Fix check_tcp segfault when multiple expect strings are given
	New option for check_tcp: -A/--all to test if all given expect strings match

1.4.8 11th April 2007
	Respects --without-world-permissions for setuid plugins
	check_disk extra options for regex matching of filesystems and grouping of filesystems
	for collective thresholds
	Better configure test for mysqlclient availability
	Various check_ntp fixes

1.4.7 29th March 2007
	check_procs uses /usr/ucb/ps if available - fixes pst3 problems on Solaris
	Fixed MKINSTALLDIRS problem in po/
	./configure now detects if possible to compile check_mysql
	Fixed broken HELO in check_smtp
	check_icmp now allows to set a minimum number of hosts required for successs (-m)
	check_icmp fix for *BSD when running for long time
	check_ping times out 1 second quicker if host is unreachable
	Root plugins installed with world executable
	check_sybase from contrib now maintained in MonitoringExchange
	--with-nagios-user/group reinstated ./configure option
	New --without-world-permissions ./configure option

1.4.6 5th February 2007
	Reduced number of DNS lookups in check_ping and netutils.c for IPv6 configurations
	Fixed compile problems with *BSD re: alloca.h
	Fixed Solaris problems with check_swap (tested on Solaris 9)
	Fixed check_swap for HP/UX where swapinfo command was incorrect
	Fixed check_disk inode threshold checks, regressed at r1.4.4.
	Fixed crit/warn for check_disk perf data
	Fixed buffer overflow in check_procs
	Fixed error handling for UNIX sockets in netutils.c
	New -q and -o options for check_by_ssh which are handed over to ssh(1) as is
	Synced with latest GNUlib
	Fixed check_jabber always returns warning

1.4.5
	Fixed bug in perl's is_hostname routine

1.4.4
	New C based check_ntp. The perl version is now deprecated.
	New check_apt plugin
	Notice: plugins in contrib/ will start to be removed from this distribution.
	  Please check at http://www.monitoringexchange.org for contributed plugins
	Major bug fixes to check_disk where values were incorrectly calculated and alerted on.
	check_udp2 removed. check_udp is now linked to check_tcp.c
	check_mailq now errors if the sub-program run returns non-zero return code. This would appear
	  as if mailqs were okay when the nagios user could not query the mail-queues
	Compile problems with check_snmp fixed

1.4.3
	Setuid plugins (check_dhcp, check_icmp) separated into plugins-root/. Run make install as root to install
	SSL plugins work with gnutls as well as OpenSSL
	check_mysql_query added to run arbitrary SQL commands, with threshold checking
	libtool now required for development systems
	Notice: check_udp (compiled from check_udp.c) will be deprecated in the next release.
	  check_udp2 should be used instead and will be renamed to check_udp

1.4.2
	Fix for Redhat ES4 for check_dns and check_dig

1.4
	IPv6 support in check_ping, check_by_ssh, check_http, check_ldap, check_smtp, check_tcp
	Internationalisation support
	Performance data added to most plugins
	check_disk now using GNU coreutils code
	New plugins - check_dhcp, check_icmp
	contrib/check_citrix has been replaced by contrib/check_ica* (requires packet_utils.pm in libexec)
	check_http --min changed to --pagesize, added max so min:max in check
	check_vsz and check_rss deprecated - functionality moved into check_procs
	check_swap % thresholds changed to measure amount free, instead of amount used
	check_disk syntax changes for -p, -m/-M, defaults to MB instead of kB
	check_procs -C expects no path for the command name