CHANGES

2024/12/31  Release v2.20
	build: annotated/signed tags need a tweak to verify correctly
	build: need awk for newer autoconf
	build: verify tag earlier
	build: drop sha1, insecure
	build: use BSD-style checksum tags
	build: make sign & verify tighter
	build: cleanup old tarballs first
	docs: document formal release process
	ci: Updated FreeBSD workflow to fix the boot loop issue.
	ci: Removed Ubuntu 18.04 build.
	docs: Expand on RELEASE-PROCESS.md
	ci: Updated the checkout action version.
	fix: Prevent null de-reference when using poll in main_loop
	ci: use improved buildroot images.
	fix(netlink): cleanup interfaces upon removal
	fix: Add the socket option IPV6_MULTICAST_LOOP to prevent the interface from autoconfiguring using RA messages sent by itself.
	ci: Added Ubuntu 24.04.
	ci: Also use ubuntu-latest for the FreeBSD build
	ci: Use latest v1 action in all cases
	feat: implement setup_allrouters_membership() et al for FreeBSD #145
	chore: remove unused 'total_seen_options' variable
	feat: Change the Prefix field of the Route Information Option to be variable-length.
	test: add more RDNSS testing for PR#193
	feat: Support more addresses in RDNSS section
	feat: improve warning about long RA options
	fix: do not die on long DNSSL option
	test: support older libcheck for ubuntu20.04
	chore: document more testcases
	chore: make RDNSS/DNSSL documentation and logic consistent
	doc: update AUTHORS in manpage
	doc: fix truncated sentence about VRRP
	feat: handle long options better
	fix: ensure send_ra_forall racount only increments for non-unicast
	ci: radvd-autogen updates for ubuntu20.04
	build: missing files from packages

2023/11/16  Release v2.20_rc1
		UnrestrictedUnicast option (respond to RS with configured clients)
		Ignore clients w/ ! prefix
		Build improvement, inc. containers for reproducible packaging
		Captive-Portal API (RFC8910)
		Default lifetime changes for RDNSS & DNSSL (RFC8106)
		Prefix lifetime based on kernel lifetimes
		Netlink fixes for simultaneous POLLERR & POLLIN
		pwname fixes for root (Fixes #165)
		Secure ND timestamp support for radvdump (RFC3971)
		RemoveAdvOnExit for zero lifetime adv on exit
		NAT64/pref64 support (RFC6052, RFC8781)
		Case-insensitive config options
		AutoIgnorePrefix
		Fix net.ipv6.conf.all.forwarding cease_adv bug

2020/09/23	Release v2.19
		bug fixes
		cleanups

2019/02/25  	Release v2.18

2019/02/15  	Add TravisCI config
		Fix double-free scenario in case if duplicate interface was specified (Fixes #100).
		Separate systemd and SysV packaging
		Update fedora packaging files
		No router advertisements on tunnel interfaces
		Add nodaemon option to the manpage
		Write to stderr in non-daemonized mode
		Fixes memory leak in add_ra_options_dnssl
		Check forwarding on interface
		Added contrib/95-radvd-gen.
		Allow quoted strings in config.
		nd_opt_6co: use uint8_t as a bitfield to be endianness-agnostic

2017/12/18	Allow quoted strings in config.

2017/07/03	Release v2.17

2017/07/01	Fix STDERR_SYSLOG log level bug.
		Always close stdout and stderr when daemonizing.

2017/03/15	Implement RFC 7772 Section 5.1.1, 5.1.2, defaulted to on. <Robin H. Johnson>

2017/02/04	clang-format the code

2017/02/01	Release v2.16

2017/01/10	Fixed ExecReload in systemd service file <Harald Albrecht>

2016/11/11	Allow selection of RA source address. <Robin H. Johnson>

2016/09/24	Release v2.15

2016/09/18	Moved auto prefix code from config file parse to send_ra.

2016/08/08	Merged ARPHRD_6LOWPAN netlink query from <Alexander Aring>
		Add systemd service file <Craig Andrews>

2016/07/05	Fixed bug in new vs old address list comparison when
		responding to netlink messages.
		Release v2.14

2016/04/02	Fix netlink bug where RADVD reacts to RTM_NEWADDR
		messages when there weren't actually any new addresses
		to be found.  Those RTM_NEWADDR messages were only
		sent when NetworkManager was running (which is just
		about always).
		Release v2.13

2016/02/01	process.c: fixup ugly overflow check
		radvd.conf.5.man: minor fixup to 'client' option
		radvd.conf.5.man: update abro usage
		gram.y: deprecate abro prefix length
		device-linux.c: IEEE 802.15.4 musl libc fix
		send.c: seconds/miliseconds comparison fix
		send.c: preferred lifetime RFC 4862, 5.5.3 fix
		defaults.h: remaining lifetime RFC 4862 fix
		radvdump: show routes with prefixlen > 64


2015/04/09	added --without-check option to configure <James Guthrie>
		Release v2.11

2015/01/22	Reverted random delay work because it broke detecting new
			interfaces in a timely manor. <Lonnie>
		Release v2.10
		Drop md5sum and bz2 packages

2014/12/31	Fix new interface coming up such that it is setup immediately.
		This fixes a regression in the 2.x branch from 1.x <volker>

2014/11/16	Fix missing random delay before sending RA.
		Fix config file crash when no auto-select prefixes are found
			debian-bug-716831

2014/10/06	Remove autoconf=0 code
		Fix memory leak after getting SIGHUP
		release v2.8

2014/09/10	Move privsep after daemonp call to avoid doing the same
			things deamonp does in privsep.
		release v2.7

2014/09/03	Write PID file from child, signal parent when complete
		Normalize some logging to read like headlines
		release v2.6

2014/08/04	release v2.5

2014/06/03	Added autogen.sh

2014/08/02	Limit non-ready interface to a much longer min timeout
		Move disable_ipv6_autoconfig to privsep
		cleanup some logging
		cleaned up some memory leaks

2014/07/30	Add test_rdnss.conf to DIST_EXTRA
		Expand make packages rule to extract the tar.gz package
			and do a make check on it to (hopefully) prevent
			forgetting to update DIST_EXTRA in the future.
		release v2.4

2014/07/30	Fix length field in RDNSS
		Fix --test option in check_all
		release v2.3

2014/07/29	Netlink, setup_iface fix for down interface coming up <Lonnie>
		release v2.2

2014/07/20	Revert bison locations in order to support byacc
		Amend DIST_EXTRA with the make check files
		release v2.1

2014/07/12	Add command line option parsing to the check unit test application
		release v2.0

2014/07/10	Add make check target based on the check unit testing framework
		release v2.0-rc5

2014/06/28	Add check in configure.ac for clock_gettime <Gustavo Zacarias>
		split send_ra into smaller function
		orgainize struct Interface with nested structures
		release v2.0-rc4

2014/06/16	Makefile.am: Fix out of tree builds
		Makefile.am: disable struct-overflow warning
		time: Use clock_gettime and monotonic clock <Markus Pargmann>
		release v2.0-rc3

2014/06/09	reorder and fix some logging

2014/05/30	add disable_ipv6_autoconfig function so an interface radvd
			is using won't autoconfig itself using its own advert
		improved netlink message processing to *only* reinit an
			interface that changed.

2014/04/10	Add compiler attributes to type check format strings <Cristian Rodríguez>

2014/03/18	release 1.10.0

2014/03/12	dropped --singleprocess option completely
		cleaned up some spelling error in the man pages

2014/03/07	log valid and preferred lifetimes
		clean up sllao code and test

2014/03/05	6LoWPAN-ND (RFC6775) support <Bhadram>
		using ppoll to prevent signal races

2014/02/28	Bug fix 1048653 - UnicastOnly option still sends multicast RA

2014/02/17	Cleaned up Makefile.am
		added fstack-protector for security
		fixed CFLAGS warning settings
		fixed problems in code raised by CFLAGS fix

2014/02/01	fixed some tests which invoked radvd instead of ./radvd
		added an iface api which hides the linked list implementation
		added a sorted list (by iface index) to the iface api
		make globals in gram.y non-global

2014/01/18	add RTMGRP_IPV6_IFADDR processing code to netlink
		refactoring, simplification and code cleanup


2014/01/13	using parser locations
		the parser can run without root
		added a 'make check' target
		reworked the initialization of interfaces <Schiffer>
		a few global variables are now local
		logging radvd PIDs
		using 'indent -linux' code style

2014/01/10	use -no-strict-aliasing

2013/11/20	Fixed attempt to get multiple values in an ioctl
		improved logging of hardware type

2013/11/17	AdvSendAdvert was being ignored in some cases <Babel>

2013/10/02	releasing 1.9.5
		minor fix in IPv6 forwarding setting check <akarl10>

2013/10/01	releasing 1.9.4

2013/09/24	Added a Makefile target to generate hashes and a gpg signature

2013/09/07	Netlink processing fix <Nathan Hintz>
		Correction in IPv6 forwarding setting check <Anand Kumria>
		fix for kernels with no NETLINK_NO_ENOBUFS defined <Sedat Dilek>

2013/04/13	Force UnicodeOnly if IFF_MULTICAST is unavailable
		Remove check for IFF_BROADCAST since it isn't used

2013/03/14	Fix for systems without sysctl.h from vapier
		Updating to version 1.9.3
		release 1.9.3

2013/03/04	radvdump MTU and route fix by Jean-Jacques

2012/11/20	Replaced pekkas@netcore.fi with reubenhwk@gmail.com
		Normalized dates in CHANGES to YYYY/MM/DD
		release 1.9.2

2012/10/11	Fix in Makefile.am for parallel builds

2012/06/19	Removing AC_C_CONST from configure

2012/06/19	Fixing bashism '==' in configure
		Updating to 1.9.1 and releasing

2012/06/14	Version 1.9 release

2012/06/02	Fixing Dabian bug #634485 (GheRivero)

2012/04/10	Using libdaemon
		bumping version to 1.9

2012/02/22	include the prefix option in the RA packets even when
		AdvPreferredLifetime equals 0, and set AdvPreferredLifetime
		as user specified(zero).  Li Wei <lw@cn.fujitsu.com>

2012/02/07	NETLINK_NO_ENOBUFS set on netlink socket to prevent
		endless error loop.  Patch by Ulrich Weber

2012/01/25	PID in PID file is now correct
		1.8.5rc1

2012/01/21	1.8.4 released

2012/01/12	renaming configure.in to configure.ac
		removing CVS keywords
		1.8.4rc1

2012/01/07	Always do privsep on linux.  Validate the PID file contents.

2011/11/02	Adding --nodaemon option

2011/10/14	1.8.3 release

2011/10/08	More careful checking of iface name

2011/10/06	Updating buffer usage tracking in send_ra to track buffer usage BEFORE
		the buffer is used rather than after in order to prevent buffer overflow

2011/10/06	1.8.2 release

2011/10/04	1) A privilege escalation flaw was found in radvd, due to a buffer overflow
		in the process_ra() function.  ND_OPT_DNSSL_INFORMATION option parsing
		"label_len" was not checked for negative values, leading to a "suffix"
		buffer overflow which can lead to privilege escalation, at least if
		radvd is compiled without GCC's stack protection. If radvd is invoked
		without privilege separation (the -u option), this can lead to an
		escalation to root privileges.  Note: Red Hat Enterprise Linux starts
		radvd by default with the unprivileged user. (CVE-2011-3601)

		2) An arbitrary file overwrite flaw was found in radvd's
		set_interface_var() function, where it did not check the interface name
		(generated by the unprivileged user) and blindly overwrites a filename
		with a decimal value by the root process.  If a local attacker could
		create symlinks pointing to arbitrary files on the system, they could
		overwrite the target file contents.  If only radvd is compromised (e.g.
		no local access), the attacker may only overwrite files with specific
		names only (PROC_SYS_IP6_* from radvd's pathnames.h). (CVE-2011-3602)

		3) The radvd daemon would not fail on privsep_init() errors, which could
		cause it to run with full root privileges when it should be running as
		an unprivileged user. (CVE-2011-3603)

		4) A number of buffer overread flaws were found in radvd's process_ra()
		function due to numerous missed len() checks. This can lead to memory
		reads outside of the stack, resulting in a crash of radvd.
		(CVE-2011-3604)

		5) A temporary denial of service flaw was found in radvd's process_rs()
		function, where it would call mdelay() on the same thread in which it
		handled all input.  If ->UnicastOnly were set, an attacker could cause a
		flood with ND_ROUTER_SOLICIT and fill the input queue of the daemon.
		This would cause a brief outage of approximately MAX_RA_DELAY_TIME / 2 *
		sizeof_input_queue when handling new clients, where MAX_RA_DELAY_TIME is
		500ms, leading to delays of more than a minute.  Note: this is only the
		case in unicast-only mode; there is no denial of service in the (normal,
		default) anycast mode. (CVE-2011-3605)

2011/08/19	uClibc has no ifaddrs.h patch by Lonnie
		slight changes to debugging output when receiving ra's and rs's

2011/05/14	Version 1.8 release

2011/05/10	removed AdvRDNSSPreference and AdvRDNSSOpen from the manpages

2011/05/06	- IgnoreIfMissing now defaults to on
		- Fixed inf loop in Base6Interface (from Ludwig Nussel)
		- Modified string regex in scanner.l reducing the compiled
		size of scanner.o by a factor or 10.

2011/05/04	- radvd is useful for advertising ULA's without having a
		router too (from Ludwig Nussel)
		- Bumping version number to 1.8alpha in VERSION for testing

2011/04/28	Adding DecrementLifetimes patch (from Mark Smith)

2011/03/25	Renaming RemoveRoute to FlushRoute (from Mark Smith)

2011/03/22	Adding RemoveRoute options (from Mark Smith)

2011/03/20	Added DeprecatePrefix option (from Mark Smith)

2011/02/28	fixed Debian Bug#615625: radvd: Error in DNSSL parsing

2011/02/26	Added Base6Interface option

2011/01/30	Added detailed output to radvd --help for the long options.
		Two sigterms or sigints calls abort.
		build system cleanup work.

2011/01/22	Fixed crash and memory leak in device-bsd44.c when an
		interface defined in the config file doesn't exist.
		Patch submitted by Manual Kasper.

2011/01/12	Release 1.7.

2011/01/07	make dist (for building tar.gz source packages) fixed.
		- 07/01: AdvSourceLLAddress fixed on FreeBSD when link
		layer token length is zero.

2010/12/14	Deprecate old, pre-RFC5006 parameters.
		Support RFC6106 by adding DNS Search List support.
		From Pierre Ossman.

2010/12/14      Integrate cleanup patches from Reuben Hawkins:
                - 14/05: patch configure.in to allow OSX 10.6 builds
		- 05/06: Unnecessary >255 test when using uint8_t
                - 06/06: fix fscanf parsing on Linux 
		- 10/12: Fix whitespaces; #includes; CLEANFILES
		From Ben Greear:
                - 05/11: Print errors on all exit() codepaths.
		From Iain J. Watson:
		- 09/12: Add '-c' flag to test configuration.
		From Pierre Ossman (idea):
                - 13/12: Remove automake-generated files.

2010/05/04	Fix a segmentation fault on reload_config() timer list
		corruption that only occurs with multiple interfaces.

2010/03/10	Fix radvd skipping multiple interfaces when
                UnicastOnly is on or AdvSendAdvert is off.
		This got broken in radvd 1.3. Patch from Cedric BAIL.

2010/03/05	Release 1.6.

2010/03/05	Update Redhat spec and init files from Fedora.

2010/01/28	Decrease MSG_SIZE from 4096 to about 1500B. Send buffer
                uses a smaller size in order to avoid sending out
                fragmented packets, yet being able to receive full-size
                frames.

2010/01/28	Keep track of buffer size and exit if the number of
		prefixes/routes/etc. would grow too much. Prevent a memory
                corruption due to wrong memset. Patches from Jan
                Görig, Red Hat bug #554125.

2010/01/22	On BSD use getifaddrs() also in setup_deviceinfo(),
		fixes a multiple interfaces problem on NetBSD 5 due to
		change in data structures. Patch from Michael Stapelberg.

2009/11/07	Allow radvd.conf prefix, clients, route, and RDNSS options
		to be in any order.  Patch from Michael Stapelberg.

2009/09/10	Release 1.5.

2009/09/07	Fix infinite loop/segmentation fault problems when cable
		plugged out/plugged back in, caused by reload_config()
		and subsequent timer list corruption.  Slightly modified
		patch from Teemu Torma.  For more information, see
		http://lists.litech.org/pipermail/radvd-devel-l/2009-August/000416.html

2009/09/07	Fix IgnoreIfMissing when cable is unplugged at startup.
		Radvd would keep skipping the interface.  Patch from
		Reuben Hawkins.

2009/08/25	Fix parallel make, from Robert Buchholz / Gentoo.

2009/08/03	Release 1.4.  Only restores original behaviour changed in
		1.3: RAs were accidentally often unicast to solicitors
		instead of being multicast.

2009/07/07	Release 1.3.

2009/06/24	Work around unaligned traps on Alpha, patch from:
		http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=456205

2009/06/19	Fixes and enhancements from Michael Stapelberg.  Add a new
		'clients' interface definition to allow configuring which
		address to send advertisements and accept from. Use
		getifaddrs() on BSD because ioctl didn't work on NetBSD 5.
		Use int instead of bool to make NetBSD 5 happy.

2009/01/21	Add a workaround for Linux in scenarios where libc is
		providing IPV6_RECV(PKTINFO|HOPLIMIT) has renumbered IPV6_PKTINFO,
		but kernel doesn't support it yet (<2.6.14).  Found out by
		Freetz (special thanks to Paul Oranje) and OpenWrt projects.
		See the source code and CVS changelog for more.

2008/10/28	Release 1.2.

2008/10/14	Accept virtually any interface name (up to 15 chars) instead of
		forcing a specific naming convention.  Patch from
		Michiel Brandenburg.

		If stale radvd.pid file exists, try to overwrite it unless
		the specified PID exists, from Fedora (Martin Nagy).

		Define _GNU_SOURCE on Linux, otherwise glibc >= 2.8
		compilation fails.

		Remove -Wconversion from default CFLAGS as it is very noisy.
		Fix some warnings, from Jim Paris.

2008/03/31	Update references to RFCs.  Give pointer to the "two hour rule".
		Decrease the default valid and preferred lifetimes from 30/1
		days to 1day/4hours, respectively.  See more info at:

		http://lists.litech.org/pipermail/radvd-devel-l/2007-October/000282.html

2008/02/04	Release 1.1.

2008/01/24	Implement privilege separation (Linux only) so that
		config_interface() works both with a user and root,
		even after HUP signal.  Work by Jim Paris.

2008/01/24      The old Linux retrans_timer proc value is given in
		USER_HZ, not in seconds.  Fix that, by Jim Paris.

2008/01/21	Fix stderr+syslog logging crash (on non-i386).  Analysis and
		patch by Jim Paris (Debian bug #409600).

2007/12/01	Require that interface is also 'RUNNING' instead of just
		'UP', except if IgnoreIfMissing is enabled.  The reason is
		that at least some recent Linux kernels do not generate
		link-local addresses before interface is running and as
		a result, the startup may fail if network cable is unplugged
		in any case.

		Note: this could break deployments with some very old 
                kernels, see more info at:

		http://lists.litech.org/pipermail/radvd-devel-l/2007-October/000280.html

2007/10/25	Implement automatically selecting and advertising an
                interface address, see radvd.conf(5) for more.  Add
		a warning about not being able to set interface
		variables with non-root user.  Relax interface naming
                a bit.

2007/06/25	Send prefix, route and RDNSS options (matters if there
		are many RDNSS options) in the same order they appear
		in the configuration; add support for AdvDefaultLifetime
		in radvdump (patches from C. Scott Ananian)

2006/01/11	Release 1.0.

2006/09/10	Perform a static/dynamic code audit; plug some minor
		bugs (see CVS changelogs for more information) and
		perform minor clean-up.

2006/07/08	Implement MAX_INITIAL_RTR_ADVERT_INTERVAL handling,
		patch from Yoshifuji Hideaki / USAGI.

2006/05/23	Unblock SIGALRM signals at startup.  Some scripts/programs
		seem to run radvd from ALRM-blocked context which breaks
		the timers.

2006/05/23	Redefined IgnoreIfMissing: by default, radvd will now
		try to reinitialize failed interfaces automatically.
		IgnoreIfMissing is still needed if radvd is started when the
		interface isn't up, and it also quenches some messages
		relating to missing interfaces.

2006/03/29	Implement RDNSS draft, using non-allocated
		IANA ND type value 25, by Lauréline Provost,
                Mickaël Guérin, Adrien Clerc, Gaetan Eleouet,
                Bahattin Demirplak, Lionel Guilmin (at the
                ENSEEIHT, Toulouse)

2006/03/06	Fix the default STDERR+syslog logging methods, so
		we don't try to unnecessarily log to STDERR after
		forking.

2006/01/18	radvd-0.9.1 did not initialize AdvDefaultLifetime (etc.)
		appropriately, unbreak the "clean-up".

2006/01/13	Release 0.9.1.

2005/12/30	Great cleanup of signed/unsigned values, add
		-Wall and a number of other warnings to CFLAGS
		by default.  Do not allow signed values for
		HomeAgentPreference anymore.

2005/12/30	Fix a couple of  IPv6 Ready Logo Phase-2 IPv6 Core
		Protocols Self Test issues, patches from Yoshifuji
		Hideaki / USAGI.

2005/11/13	Create a short FAQ in README file.

2005/10/28	Get interface MTU automatically, so that you can
		use jumboframes and advertise MTU >1500.

2005/10/19	Release 0.9.

2005/10/18	Transfer sole maintainership of radvd to Pekka Savola.

2005/10/18	Make the radvd.conf syntax dump default
		in radvdump and remove the previous default to
		reduce code duplication.

2005/09/28	Add NEMO Basic support (RFC3961) and fix default
		HomeAgentLifetime, from Ville Nuorvala.

2005/08/18	Implement more robust timer handler, especially
		because some Linux kernels don't seem to behave
		all that well; see http://lkml.org/lkml/2005/4/29/163.
		Based on extensive testing & reports by
		Tomasz Grobelny.  NB: the bug report was caused by
		a bad timer patch in PLD's kernel package, and this
		should not occur often with standard kernels.

2005/07/24	Implement a new logging method "stderr_syslog" which is
		now also the default.  Everything is logged on syslog,
		while the most important messages (i.e., start-up failures)
		are also logged on stderr.

2005/07/08	Release 0.8.

2005/07/05	Change the more-specific route ND option code
		from de-facto '9' to the official '24'.  Change
		back in defaults.h if you need old behaviour.

2005/07/05	Fix wrongly calculated prefix with Base6to4Interface
                on ppc and maybe other big endian arches, from
		Debian #301543 by Sam Hathaway.

2005/07/05	Fix Linux-2.6.12-bk4+ error with HUP signal,
		from YOSHIFUJI Hideaki / USAGI.

2005/03/29	Merge a part of MIPv6/non-MIPv6 code, make printing
		error messages nicer.

2005/03/22	Be a bit more informative about config file parsing
		errors.

2005/02/21	Release 0.7.3.

2005/02/19	Fix crash when reloading config with AdvSendAdvert off.

2005/02/15	Merge a few fixes and improvements from USAGI:
		 - support microsecond scheduling and fix RA intervals
		 - send zero router lifetime when forwarding is disabled
		 - use a more flexible inter-RA delay

2005/01/07	Accomodate interface indexes > 9999, from Hagen Fritsch.

2004/12/15	Advertise zero Router Lifetime when shutting down;
		implements a SHOULD in RFC2461 section 6.2.5.

2004/10/16	Update Mobile IPv6 to match RFC 3775, from Greg Daley.

2004/08/20	Minor documentation cleanups.

2004/03/09      Implement "IgnoreIfMissing" interface flag, which can be
                used on interfaces which aren't enabled when radvd starts
                but will later become available (e.g., Bluetooth) --
                and then you wish to send HUP to radvd to activate the
                configs.

2004/02/21      Further cleanups, to fix autoconf/autoheader problems
                with newer toolchain; mostly by Marko Myllynen.

2004/02/20      Clean up a bit: remove old junk from configure.in,
                rename "log()" to "flog()" to satisfy newer GCCs,
                allow underscores in the interface names (the last two
                fixes already committed earlier).
                                                                                
2004/01/19      Make radvd check for forwarding status using procfs on
                Linux; needed with 2.6 kernels.  Loosely based on
                a patch by USAGI.

2003/11/21	Add support for Router Preferences and More Specific
		Routes from Markku Savela <msa@burp.tkv.asdf.org>.
		NOTE! The specification is not final yet, there will be
		changes!  (Man page, documentation and radvdump support
		by Pekka Savola.)

2003/09/11	When starting up, check if the MAC address is all zero
		(could happen e.g. with bridge interfaces with no attached
		physical interfaces), and warn if so. For more information,
		http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=103469

2003/06/10	When chrooting, check the possible return code 
		from chdir("/").

2003/03/08	Add patch from MAEDA Naoaki <maeda.naoaki@jp.fujitsu.com>
		to discard RS's from the unspecied source address with
		link-layer address option, as required by RFC2461.

2002/10/28	Release 0.7.2:
		 - add support for VLANs (from USAGI)
		 - make it compile better on newer NetBSD's (NetBSD)
		 - fix a syntax error in radvd.conf(5) sample documentation
		 - use IPV6_RECV{HOPLIMIT,PKTINFO} not 
                       IPV6_{HOPLIMIT,PKTINFO} if supported
		 - (in Red Hat spec file) don't create radvd gid explicitly
		 - a lot of coding style cleanups

2002/01/16	Release 0.7.1.

2002/01/12	Update config.{guess,sub} from ftp.gnu.org; update INTRO.
		Marko Myllynen and Debian bug #115992.

2002/01/02	Ensure NULL-termination with strncpy.

2001/12/31	Radvdump fixes: eliminate a warning of Prefix Information
		sections with '-d -f'; add a note that
		{Min,Max}RtrAdvInterval cannot be obtained with '-f';
		implement '-e' to be used with '-f' which omits all
		advertised default settings. Mostly by Marko Myllynen.

2001/12/28	Small cleanups.  AdvSendAdvert is implicitly off by
		default.  Check configuration file permissions; must
		not be writable by others, and if non-root,
		not by self/own group.  By Marko Myllynen.

2001/12/21	Check via sysctl that IPv6 forwarding is enabled;
		exit unless debugging is enabled.  Triggered by
		Marko Myllynen.

2001/11/22	MinRtrAdvInterval for MIPv6 is 0.05 seconds, not 0.5.
		(Note: untested).

2001/11/20	Rework BSD device memory management a bit, minor cleanups.
		Version bumped to 0.7.0.

2001/11/14	Maintainership of radvd transferred from Lars Fenneberg
		to Pekka Savola and Nathan Lutchansky.  Lars' CVS
		repository adopted, and changes merged from the -pX
		branch.

2001/08/29	Minor change for NetBSD 1.5.1 compatibility.
		(Nathan Lutchansky)

2001/07/20	Support for non-multicast links, like ISATAP.
		(Nathan Lutchansky)

2001/07/03	Minimum MTU has been changed to 1280 in the latest RFC's.
		(Pekka Savola)

2001/06/30	Check for possible buffer overflows; replace strcpy with
		strncpy.  No fatals found.  Remove redunant radvd -t check.
		(Pekka Savola)

2001/06/24	Fix 1-byte overflow in /proc/net/igmp6 handling,
                clean out possible memory garbage when sending RA's
		(patch from <yoshfuji@linux-ipv6.org>).

2001/06/19	When dropping root, also set up supplementary groups
		properly.  On Linux, when sending RA's, check that the
		interface has joined all-routers multicast group.  Add a few
		RFC2461 MUST sanity checks when receiving datagrams.  Clean
		out non-EUI64 addressing scheme and other minor bits.
		(Pekka Savola)

2001/04/28	Misc cleanup and bugfixes, automake support.

2001/03/28	Grammar cleanup. Integrated 6to4 support through
		"Base6to4Interface" option in prefix configuration. Signal
		handling fixed by blocking on select() rather than recvmsg()
		so SIGTERM/HUP take effect immediately now. (Nathan Lutchansky)

2001/03/27	Security fixes: close stdin/out and chdir("/") via
		daemon() to prevent possible exploits, and a flag to allow
		radvd to set[ug]id to an unprivileged user (from Pekka Savola).

2001/02/01	scope_id is not supported in glibc2.1. So it is now
		compiled conditionally.

2001/01/31	Add CC variable to Makefile. Fix bug with IPV6_ADD_MEMBERSHIP
		handling. Set scope_id when sending packets.

2000/12/02	man pages update, rewritten pid file handling, rewritten
		signal handling (SIGHUP and SIGTERM), gcc warnings cleanup,
		new radvdump option -f: print received RAs in config file
		format (by Marko)

2000/11/19	integrated the last two change entries into the main source
		(patches by Marko Myllynen), fixed bug in log.c, fixed file
		description leak in readin_config, rewrote code in timer.c,
		updated man pages again (from Marko Myllynen, too), PID
		file support (patch from Marko Myllynen, based on a patch
		from Tommi.Komulainen@iki.fi)

2000/08/15	RFC 2461 updates, Mobile IPv6 extensions added

2000/07/14 	added RA interval option and modified some default values
		for timers

1999/06/15	changed to run with glibc 2.1 on RedHat 6.0.

1998/03/03	radvd now joins ipv6-allrouters on Linux.  Fix contributed
		by A.N.Kuznetsov <kuznet@ms2.inr.ac.ru>.

1997/10/23	radvd will now accept any prefix length in its config
		file but will warn about unusual ones

1997/10/19	removed backwards compatibility code in recv.c.
		IPV6_HOPLIMIT support is now assumed to exist.

1997/10/19	fixed alignment problems in recv.c and send.c.

1997/10/16	the Makefile install target now uses mkinstalldirs.

1997/10/16	changed all u_int*_t to uint*_t for better POSIX
		compliance and portability. Needs 2.1.57-CVS or glibc.
		BSD seems to need patches.

1997/10/16	more intelligent configure; tries to figure out
		where the IPv6 libraries and inclues are (if not in
		the standard places). Searches in /usr/inet6 and /usr/ipv6.

1997/10/15	integrated small patches for glibc and BSD from Craig and
		Philip

1997/09/14	EUI-64 "support"

1997/09/01	centralized all includes into includes.h for easier
		maintainance

1997/08/25	changed all occurences of IPV6_TXINFO/IPV6_RXINFO
		to IPV6_PKTINFO

1997/08/25	removed some compatibility stuff for older Linux kernels

1997/03/17	changed linux/if_arp.h to net/if_arp.h in device-linux.c
		and configure.in (for glibc compatibility)

1997/03/17	integrated patch from Philip Blundell <pjb27@cam.ac.uk>
		into configure.in to check for inet_* in libc first and
		then for libinet6 (for glibc compatibility).

1997/03/16	corrected small error in radvd.conf(5) man page and other
		small changes

1997/03/16	removed linklocal.c source file from the distribution
		because it wasn't used anymore

1997/03/16	added html version of the INTRO, removed ascii version.

1997/02/12	missing directories are now created on make install

1997/01/19	now also the rest of a line followed by a '#' is treated
		as a comment in the config file

1997/01/16	added IPPROTO_IPV6/IPV6_HOPLIMIT support, so now incoming
		RS' and RAs are checked if there hoplimit is 255 (on Linux
		this only works with kernel version 2.1.21 and above)

1997/01/15	lots of portability cleanups; radvd is now using autoconf
		for automatic configuration; removed support for the
		in. prefix

1997/01/05	integrated BSD 4.4 patches from Craig <cmetz@inner.net>

1996/12/21	release of version 0.3

1996/12/15	the AdvSendAdvert flag works now

1996/12/14	added radvdump, dumps all received RAs in a human
		readable form	

1996/12/13	rewrote radvd to use new advanced API headers

1996/12/08	added radvd.conf(5) man page

1996/12/03	changed RAW_CHECKSUM to IPV6_CHECKSUM for kernels
		2.1.14 and above

1996/11/24	added checking of received RAs according to RFC 1970

1996/11/20	rewrote the default handling, now it should conform
		to RFC 1970

1996/11/17	release of version 0.2
	
1996/11/17	added -h (--help) and -f (--facility) option

1996/11/17	added setsockopt(..., SOL_IPV6, IPV6_MULTICAST_HOPS), so
	 	that radvd works for kernel versions >2.1.7 (without this
	 	you get "NDISC: fake router advertisment received" on your
	 	hosts)
	
1996/11/17	added a man page for radvd(8)

1996/11/17	some minor filename changes

1996/11/13	first release of this version of in.radvd (0.1)