bsd.own.mk: rename GCC_NO_* to CC_WNO_*

Rename compiler-warning-disable variables from
GCC_NO_warning
to
CC_WNO_warning
where warning is the full warning name as used by the compiler.

GCC_NO_IMPLICIT_FALLTHRU is CC_WNO_IMPLICIT_FALLTHROUGH

Using the convention CC_compilerflag, where compilerflag
is based on the full compiler flag name.

rtadvd: no longer need packed member warning

add support for new GCC 9 warnings that may be too much to fix
right now. new address-of-packed-member and format-overflow
warnings have new GCC_NO_ADDR_OF_PACKED_MEMBER amd
GCC_NO_FORMAT_OVERFLOW variables to remove these warnings.

apply to a bunch of the tree. mostly, these are real bugs that
should be fixed, but in many cases, only by removing the 'packed'
attribute from some structure that doesn't really need it. (i
looked at many different ones, and while perhaps 60-80% were
already properly aligned, it wasn't clear to me that the uses
were always coming from sane data vs network alignment, so it
doesn't seem safe to remove packed without careful research for
each affect struct.) clang already warned (and was not erroring)
for many of these cases, but gcc picked up dozens more.

rtadvd: Remove router renumbering - it's been disable for years

introduce some common variables for use in GCC warning disables:

GCC_NO_FORMAT_TRUNCATION -Wno-format-truncation (GCC 7/8)
GCC_NO_STRINGOP_TRUNCATION -Wno-stringop-truncation (GCC 8)
GCC_NO_STRINGOP_OVERFLOW -Wno-stringop-overflow (GCC 8)
GCC_NO_CAST_FUNCTION_TYPE -Wno-cast-function-type (GCC 8)

use these to turn off warnings for most GCC-8 complaints. many
of these are false positives, most of the real bugs are already
commited, or are yet to come.


we plan to introduce versions of (some?) of these that use the
"-Wno-error=" form, which still displays the warnings but does
not make it an error, and all of the above will be re-considered
as either being "fix me" (warning still displayed) or "warning
is wrong."

use expandm from libwrap.

branches: 1.21.2; 1.21.4;
use librumpres

Disable a couple of warnings until further investigation.

branches: 1.19.2;
No more obvious strict aliasing violations here.

Introduce rump.rtadvd

It is used to write ATF tests for RA.

From s-yamaguchi@IIJ.

Remove many HAVE_GCC || HAVE_PCC conditionals as the options also apply
to Clang. Add a few cases of HAVE_LLVM for -fno-strict-aliasing.

Add RDNSS and DNSSL support, RFC6106.
Replace custom lists with TAILQ lists.
Clean up plently of signed vs unsigned warnings and set WARNS=4.

Adapted from FreeBSD.

branches: 1.15.2;
remove most of the remaining HAVE_GCC tests that are always true in
the modern world.

branches: 1.14.4;
add -DROUTEINFO

Enable WARNS=4 by default, except for:
cpuctl dumplfs hprop ipf iprop-log kadmin kcm kdc kdigest
kimpersonate kstash ktutil makefs ndbootd ntp pppd quot
racoon racoonctl rtadvd sntp sup tcpdchk tcpdmatch tcpdump
traceroute traceroute6 user veriexecgen wsmoused zic
(Mostly third-party applications)

branches: 1.12.6;
Wrap compiler-specific flags with HAVE_GCC and HAVE_PCC as necessary. Add a few flags for PCC.

branches: 1.11.12;
Add new Makefile knob, USE_FORT, which extends USE_SSP by turning on the
FORTIFY_SOURCE feature of libssp, thus checking the size of arguments to
various string and memory copy and set functions (as well as a few system
calls and other miscellany) where known at function entry. RedHat has
evidently built all "core system packages" with this option for some time.

This option should be used at the top of Makefiles (or Makefile.inc where
this is used for subdirectories) but after any setting of LIB.

This is only useful for userland code, and cannot be used in libc or in
any code which includes the libc internals, because it overrides certain
libc functions with macros. Some effort has been made to make USE_FORT=yes
work correctly for a full-system build by having the bsd.sys.mk logic
disable the feature where it should not be used (libc, libssp iteself,
the kernel) but no attempt has been made to build the entire system with
USE_FORT and doing so will doubtless expose numerous bugs and misfeatures.

Adjust the system build so that all programs and libraries that are setuid,
directly handle network data (including serial comm data), perform
authentication, or appear likely to have (or have a history of having)
data-driven bugs (e.g. file(1)) are built with USE_FORT=yes by default,
with the exception of libc, which cannot use USE_FORT and thus uses
only USE_SSP by default. Tested on i386 with no ill results; USE_FORT=no
per-directory or in a system build will disable if desired.

u_char -> char for several things:
- inet_ntop()
- if_indextoname()
- variable assignment matching
char -> u_char in one place for variable assignment matching

use -fno-strict-aliasing for dump.c with GCC4

libcompat isn't needed any more here.

use pidfile(3). sync w/kame

Need <bsd.own.mk> now.

Don't install the example config if MKSHARE=no.

make it clearer that /etc/rtadvd.conf is optional (normally,
configurations were derived from kernel interface settings).

install rtadvd.conf into /usr/share/exapmles/rtadvd, instead of /etc.

sync with kame.

sync with latest kame.
- decrease warning level on missing rtadvd.conf (actually, the file
can be omitted)
- strict prototype
- gather stats better, emit stats on SIGUSR1 to /var/run

s/CFLAGS/CPPFLAGS/ for -D and -I.

rtadvd: advertise IPv6 prefix info via router advertisement.
(to be run on routers)

print function names as %s: not <%s> everywhere for consistency.

- add or adjust /* FALLTHROUGH */ where appropriate
- add __unreachable() after functions that can return but won't in
this case, and thus can't be marked __dead easily

branches: 1.17.4;
Change the meaning of the 'D' flag to print errors to stderr instead of
syslog(3) and exit if poll(2) fails (intended to be used with unit-tests).

branches: 1.16.8;
Introduce rump.rtadvd

It is used to write ATF tests for RA.

From s-yamaguchi@IIJ.

Use %m in syslog(3) instead of %s strerror(3).

Remove the iflist array and store ifflags in rainfo.

Add support for SIGHUP to re-read the configuration for each interface.
If an invalid configuration is found, we continue to use the old one;
otherwise we expire the current one and then start advertising the new one.

Specififed interfaces don't have to exist at startup.
If specified interfaces arrive, load their config and start advertising.
If they depart, remove their rainfo structure and continue.

Fixes PR/43881 and PR/47311

branches: 1.13.6;
Add RDNSS and DNSSL support, RFC6106.
Replace custom lists with TAILQ lists.
Clean up plently of signed vs unsigned warnings and set WARNS=4.

Adapted from FreeBSD.

branches: 1.12.42;
actually toggle the value of dquote when seeing a '"', as I intuit the
author must have intended. Found via coverity CID 579.

NDP-related improvements:
RFC4191
- supports host-side router-preference

RFC3542
- if DAD fails on a interface, disables IPv6 operation on the
interface
- don't advertise MLD report before DAD finishes

Others
- fixes integer overflow for valid and preferred lifetimes
- improves timer granularity for MLD, using callout-timer.
- reflects rtadvd's IPv6 host variable information into kernel
(router only)
- adds a sysctl option to enable/disable pMTUd for multicast
packets
- performs NUD on PPP/GRE interface by default
- Redirect works regardless of ip6_accept_rtadv
- removes RFC1885-related code

From the KAME project via SUZUKI Shinsuke.
Reviewed by core.

Add (unsigned char) cast to ctype functions

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22366, verified by myself.

byebye __FUNCTIION__. sync w/kame

KNF, strlcpy, memory leak fix, random other cleanups. sync w/kame

avoid infinite loop when -s is specified (select loop mistake).
make agetent() 32bit clean. KAME PR 127.
disable -R (router renumbering receiver). sync with kame.

sync with latest kame.
- decrease warning level on missing rtadvd.conf (actually, the file
can be omitted)
- strict prototype
- gather stats better, emit stats on SIGUSR1 to /var/run

bring in latest kame tree. this fixes unclosed file descdriptor
in router renumbering case.

netbsd rcsid fix.

branches: 1.2.4;
fix for 64bit arch, where sizeof(size_t) != sizeof(int).
add NetBSD RCS ID.

rtadvd: advertise IPv6 prefix info via router advertisement.
(to be run on routers)

Add RDNSS and DNSSL support, RFC6106.
Replace custom lists with TAILQ lists.
Clean up plently of signed vs unsigned warnings and set WARNS=4.

Adapted from FreeBSD.

branches: 1.6.42;
NDP-related improvements:
RFC4191
- supports host-side router-preference

RFC3542
- if DAD fails on a interface, disables IPv6 operation on the
interface
- don't advertise MLD report before DAD finishes

Others
- fixes integer overflow for valid and preferred lifetimes
- improves timer granularity for MLD, using callout-timer.
- reflects rtadvd's IPv6 host variable information into kernel
(router only)
- adds a sysctl option to enable/disable pMTUd for multicast
packets
- performs NUD on PPP/GRE interface by default
- Redirect works regardless of ip6_accept_rtadv
- removes RFC1885-related code

From the KAME project via SUZUKI Shinsuke.
Reviewed by core.

KNF, strlcpy, memory leak fix, random other cleanups. sync w/kame

avoid infinite loop when -s is specified (select loop mistake).
make agetent() 32bit clean. KAME PR 127.
disable -R (router renumbering receiver). sync with kame.

sync with latest kame.
- decrease warning level on missing rtadvd.conf (actually, the file
can be omitted)
- strict prototype
- gather stats better, emit stats on SIGUSR1 to /var/run

fix for 64bit arch, where sizeof(size_t) != sizeof(int).
add NetBSD RCS ID.

rtadvd: advertise IPv6 prefix info via router advertisement.
(to be run on routers)

usr.sbin: remove unnecessary CONSTCOND, lint no longer needs it

Since 2021-01-31, lint no longer requires a CONSTCOND comment in a
do-while-0 statement since this is a common code pattern, especially in
statement-like macros.

sed -i -E 's,} while \(/\* ?CONSTCOND ?\*/ ?0\),} while (0),' */*.[ch]

print function names as %s: not <%s> everywhere for consistency.

- remove extra \n from stderr logging
- add string message types
- sprinkle const

rtadvd: Remove disabled use of SIOCGIFPREFIX_IN6

It's not been enabled since the functionality was added to ifconfig(8)
many many years ago.

rtadvd: Add C flag to control the zeroing of the leaving configuration

This is only intended to assist the testing of clients which consume
Router Advertisement messages, such as dhcpcd(8).

rtadvd: remove support for SIOCSIFINFO_IN6

It's been broken since we enabled dropping privs.
It's also probably the wrong place to do this, and support for
SIOCSIFINFO_IN6 will be in the next dhcpcd import.

branches: 1.41.2;
rtadvd: fix rdnss and dnssl lifetime assignment

Treat it the same as a prefix valid time as per the RFC.
This allows to set a zero value to remove the assignment from the node.

branches: 1.40.2;
Unicast solicited RA's as per RFC 7772.

This is done by having a secondary timer against rainfo so we
can delay unicasting by the required randomised amount of time
without affecting the unsolicited RA timer.

Ensure that the soliciter list is initialised and freed correctly, even if it's not used yet.

White space police.

branches: 1.37.2;
Change the meaning of the 'D' flag to print errors to stderr instead of
syslog(3) and exit if poll(2) fails (intended to be used with unit-tests).

branches: 1.36.4;
Fix the default value of rltime

According to rtadvd.conf(5), the default value of rltime is 1800 seconds.

PR bin/51994

branches: 1.35.2; 1.35.4;
Introduce rump.rtadvd

It is used to write ATF tests for RA.

From s-yamaguchi@IIJ.

Use clock_gettime(2) instead of gettimeofday(2) so we can use a monotonic
clock rather than the wall clock.
Use timespec rather than timeval structs to make this transition easier.
Kill custom timeval comparison functions in favor of timespeccmp(3).

branches: 1.33.8; 1.33.10; 1.33.14;
fix previous.

make it static const

Intsead of forcing out each RA at shutdown and sleeping we now use
the existing timer model and wait for each RA to expire itself after
sending the required number of transmissions.

This allows for a faster and saner shutdown.

Remove the iflist array and store ifflags in rainfo.

Add support for SIGHUP to re-read the configuration for each interface.
If an invalid configuration is found, we continue to use the old one;
otherwise we expire the current one and then start advertising the new one.

Specififed interfaces don't have to exist at startup.
If specified interfaces arrive, load their config and start advertising.
If they depart, remove their rainfo structure and continue.

Fixes PR/43881 and PR/47311

Add support for the noifprefix keyword which stops rtadvd(8) gathing prefix
information from the interface if no addrs are present in rtadvd.conf(5).

branches: 1.28.2;
Fix a bug that incorrect RA packet is sent if rtadvd.conf exists.
Fixes PR#46580 reported by Takahiro HAYASHI.

branches: 1.27.2;
- sprinkle const
- malloc + memset -> calloc
- free + malloc -> realloc
- syslog("%s", strerror(errno)) -> syslog("%m")

Add RDNSS and DNSSL support, RFC6106.
Replace custom lists with TAILQ lists.
Clean up plently of signed vs unsigned warnings and set WARNS=4.

Adapted from FreeBSD.

branches: 1.25.16; 1.25.42;
u_char -> char for several things:
- inet_ntop()
- if_indextoname()
- variable assignment matching
char -> u_char in one place for variable assignment matching

PR 33462: default maxinterval was not being initialized properly.
From Matthias Scheller.

From KAME sources.

avoid heap overrun. thanks goes to Susan Lan of zyxel.

NDP-related improvements:
RFC4191
- supports host-side router-preference

RFC3542
- if DAD fails on a interface, disables IPv6 operation on the
interface
- don't advertise MLD report before DAD finishes

Others
- fixes integer overflow for valid and preferred lifetimes
- improves timer granularity for MLD, using callout-timer.
- reflects rtadvd's IPv6 host variable information into kernel
(router only)
- adds a sysctl option to enable/disable pMTUd for multicast
packets
- performs NUD on PPP/GRE interface by default
- Redirect works regardless of ip6_accept_rtadv
- removes RFC1885-related code

From the KAME project via SUZUKI Shinsuke.
Reviewed by core.

relax addrs#x config parameter. should address PR 21872

strncpy -> strlcpy

test malloc failure. From: Chad Loder <cloder@acm.org>. sync w/kame

byebye __FUNCTIION__. sync w/kame

Remove extra/redundant argument to syslog.

use strchr

do not use deprecated ioctls

KNF, strlcpy, memory leak fix, random other cleanups. sync w/kame

prevent overflow of lifetime value. sync with kame

typo. ntohl -> htonl.

avoid infinite loop when -s is specified (select loop mistake).
make agetent() 32bit clean. KAME PR 127.
disable -R (router renumbering receiver). sync with kame.

make sure to initialize prefix information struct before use. sync with kame

sync with latest kame.
- make icmp6.h spec conformant to 2292bis-02, regarding to router reumbering
flag bit.
- latest rtadvd.

sync with latest kame tree.
- reduce chances for signal handler rae condition
- decrease chances for misconfiguration
- feedbacks from router renumbering protocol bakeoff

sync with latest kame.
- decrease warning level on missing rtadvd.conf (actually, the file
can be omitted)
- strict prototype
- gather stats better, emit stats on SIGUSR1 to /var/run

bring in latest kame tree. this fixes unclosed file descdriptor
in router renumbering case.

fix include file path (IPv6 related).

add -R (accept router renumbering packet). now router renumbering is disabled
by default for ipsec config twists.
dies gracefully on SIGTERM.

fix for 64bit arch, where sizeof(size_t) != sizeof(int).
add NetBSD RCS ID.

more careful signed-ness handling in parsing config file.

rtadvd: advertise IPv6 prefix info via router advertisement.
(to be run on routers)

- remove extra \n from stderr logging
- add string message types
- sprinkle const

rtadvd: Remove disabled use of SIOCGIFPREFIX_IN6

It's not been enabled since the functionality was added to ifconfig(8)
many many years ago.

branches: 1.10.2;
White space police.

branches: 1.9.28;
Remove the iflist array and store ifflags in rainfo.

Add support for SIGHUP to re-read the configuration for each interface.
If an invalid configuration is found, we continue to use the old one;
otherwise we expire the current one and then start advertising the new one.

Specififed interfaces don't have to exist at startup.
If specified interfaces arrive, load their config and start advertising.
If they depart, remove their rainfo structure and continue.

Fixes PR/43881 and PR/47311

branches: 1.8.6;
- sprinkle const
- malloc + memset -> calloc
- free + malloc -> realloc
- syslog("%s", strerror(errno)) -> syslog("%m")

Add RDNSS and DNSSL support, RFC6106.
Replace custom lists with TAILQ lists.
Clean up plently of signed vs unsigned warnings and set WARNS=4.

Adapted from FreeBSD.

branches: 1.6.42;
NDP-related improvements:
RFC4191
- supports host-side router-preference

RFC3542
- if DAD fails on a interface, disables IPv6 operation on the
interface
- don't advertise MLD report before DAD finishes

Others
- fixes integer overflow for valid and preferred lifetimes
- improves timer granularity for MLD, using callout-timer.
- reflects rtadvd's IPv6 host variable information into kernel
(router only)
- adds a sysctl option to enable/disable pMTUd for multicast
packets
- performs NUD on PPP/GRE interface by default
- Redirect works regardless of ip6_accept_rtadv
- removes RFC1885-related code

From the KAME project via SUZUKI Shinsuke.
Reviewed by core.

relax addrs#x config parameter. should address PR 21872

sync with latest kame.
- decrease warning level on missing rtadvd.conf (actually, the file
can be omitted)
- strict prototype
- gather stats better, emit stats on SIGUSR1 to /var/run

add -R (accept router renumbering packet). now router renumbering is disabled
by default for ipsec config twists.
dies gracefully on SIGTERM.

fix for 64bit arch, where sizeof(size_t) != sizeof(int).
add NetBSD RCS ID.

rtadvd: advertise IPv6 prefix info via router advertisement.
(to be run on routers)

print function names as %s: not <%s> everywhere for consistency.

rtadvd: use %u to print unsigned variables

branches: 1.16.2;
White space police.

branches: 1.15.2;
Change the meaning of the 'D' flag to print errors to stderr instead of
syslog(3) and exit if poll(2) fails (intended to be used with unit-tests).

branches: 1.14.8;
Omit needless casts.

Introduce rump.rtadvd

It is used to write ATF tests for RA.

From s-yamaguchi@IIJ.

Use clock_gettime(2) instead of gettimeofday(2) so we can use a monotonic
clock rather than the wall clock.
Use timespec rather than timeval structs to make this transition easier.
Kill custom timeval comparison functions in favor of timespeccmp(3).

Add _rtadvd user and group.
Add a chroot dir for the _rtadvd user.
Drop privs to the user _rtadvd after acquiring our socket.
When rc.d/rtadvd starts or reloads, the rtadvd config file is copied
into the chroot before starting or reloading rtadvd itself.
Create a symlink from /var/run/rtadvd.dump to the chroot

Inital idea from OpenBSD patch rtadvd.c r1.36

Remove the iflist array and store ifflags in rainfo.

Add support for SIGHUP to re-read the configuration for each interface.
If an invalid configuration is found, we continue to use the old one;
otherwise we expire the current one and then start advertising the new one.

Specififed interfaces don't have to exist at startup.
If specified interfaces arrive, load their config and start advertising.
If they depart, remove their rainfo structure and continue.

Fixes PR/43881 and PR/47311

branches: 1.9.6;
Add RDNSS and DNSSL support, RFC6106.
Replace custom lists with TAILQ lists.
Clean up plently of signed vs unsigned warnings and set WARNS=4.

Adapted from FreeBSD.

branches: 1.8.8;
fix format of time_t

branches: 1.7.16;
NDP-related improvements:
RFC4191
- supports host-side router-preference

RFC3542
- if DAD fails on a interface, disables IPv6 operation on the
interface
- don't advertise MLD report before DAD finishes

Others
- fixes integer overflow for valid and preferred lifetimes
- improves timer granularity for MLD, using callout-timer.
- reflects rtadvd's IPv6 host variable information into kernel
(router only)
- adds a sysctl option to enable/disable pMTUd for multicast
packets
- performs NUD on PPP/GRE interface by default
- Redirect works regardless of ip6_accept_rtadv
- removes RFC1885-related code

From the KAME project via SUZUKI Shinsuke.
Reviewed by core.

byebye __FUNCTIION__. sync w/kame

KNF, strlcpy, memory leak fix, random other cleanups. sync w/kame

correct bitmask computation. more KNF. sync w/kame

sync with latest kame tree.
- reduce chances for signal handler rae condition
- decrease chances for misconfiguration
- feedbacks from router renumbering protocol bakeoff

sync with sys/netinet/icmp6.h change (no bitfield for router renumber).
more logging. improve error handling/garbage collection. sync with kame.

branches: 1.1.4;
sync with latest kame.
- decrease warning level on missing rtadvd.conf (actually, the file
can be omitted)
- strict prototype
- gather stats better, emit stats on SIGUSR1 to /var/run

White space police.

branches: 1.2.38;
Add RDNSS and DNSSL support, RFC6106.
Replace custom lists with TAILQ lists.
Clean up plently of signed vs unsigned warnings and set WARNS=4.

Adapted from FreeBSD.

branches: 1.1.60;
sync with latest kame.
- decrease warning level on missing rtadvd.conf (actually, the file
can be omitted)
- strict prototype
- gather stats better, emit stats on SIGUSR1 to /var/run

print function names as %s: not <%s> everywhere for consistency.

interface indexes are unsigned

- remove extra \n from stderr logging
- add string message types
- sprinkle const

White space police.

branches: 1.25.2;
Change the meaning of the 'D' flag to print errors to stderr instead of
syslog(3) and exit if poll(2) fails (intended to be used with unit-tests).

branches: 1.24.8;
Introduce rump.rtadvd

It is used to write ATF tests for RA.

From s-yamaguchi@IIJ.

Use %m in syslog(3) instead of %s strerror(3).

Remove the iflist array and store ifflags in rainfo.

Add support for SIGHUP to re-read the configuration for each interface.
If an invalid configuration is found, we continue to use the old one;
otherwise we expire the current one and then start advertising the new one.

Specififed interfaces don't have to exist at startup.
If specified interfaces arrive, load their config and start advertising.
If they depart, remove their rainfo structure and continue.

Fixes PR/43881 and PR/47311

branches: 1.21.6;
Use RT_ADVANCE when available.
Fixes PR/44838

- sprinkle const
- malloc + memset -> calloc
- free + malloc -> realloc
- syslog("%s", strerror(errno)) -> syslog("%m")

Add RDNSS and DNSSL support, RFC6106.
Replace custom lists with TAILQ lists.
Clean up plently of signed vs unsigned warnings and set WARNS=4.

Adapted from FreeBSD.

branches: 1.18.16; 1.18.42;
NDP-related improvements:
RFC4191
- supports host-side router-preference

RFC3542
- if DAD fails on a interface, disables IPv6 operation on the
interface
- don't advertise MLD report before DAD finishes

Others
- fixes integer overflow for valid and preferred lifetimes
- improves timer granularity for MLD, using callout-timer.
- reflects rtadvd's IPv6 host variable information into kernel
(router only)
- adds a sysctl option to enable/disable pMTUd for multicast
packets
- performs NUD on PPP/GRE interface by default
- Redirect works regardless of ip6_accept_rtadv
- removes RFC1885-related code

From the KAME project via SUZUKI Shinsuke.
Reviewed by core.

no need for "sdl = NULL" initialization on decl. cedric@openbsd

simplify by using getifaddrs

plug memory leak. from kame

byebye __FUNCTIION__. sync w/kame

KNF, strlcpy, memory leak fix, random other cleanups. sync w/kame

correct bitmask computation. more KNF. sync w/kame

KNF. a memory leak fix. sync w/kame

sync with latest kame.
- make icmp6.h spec conformant to 2292bis-02, regarding to router reumbering
flag bit.
- latest rtadvd.

comment or delete text after CPP directives.

sync with latest kame tree.
- reduce chances for signal handler rae condition
- decrease chances for misconfiguration
- feedbacks from router renumbering protocol bakeoff

repair interface MTU grabbing. real cause of PR 10923.
from koji@jp.above.net. sync with kame.

sync with sys/netinet/icmp6.h change (no bitfield for router renumber).
more logging. improve error handling/garbage collection. sync with kame.

branches: 1.5.4;
sync with latest kame.
- decrease warning level on missing rtadvd.conf (actually, the file
can be omitted)
- strict prototype
- gather stats better, emit stats on SIGUSR1 to /var/run

don't assume CMSG_xx are constant. (sync with latest kame)

sync with more recent KAME.

branches: 1.2.4;
fix for 64bit arch, where sizeof(size_t) != sizeof(int).
add NetBSD RCS ID.

rtadvd: advertise IPv6 prefix info via router advertisement.
(to be run on routers)

interface indexes are unsigned

- remove extra \n from stderr logging
- add string message types
- sprinkle const

White space police.

branches: 1.10.28;
Remove the iflist array and store ifflags in rainfo.

Add support for SIGHUP to re-read the configuration for each interface.
If an invalid configuration is found, we continue to use the old one;
otherwise we expire the current one and then start advertising the new one.

Specififed interfaces don't have to exist at startup.
If specified interfaces arrive, load their config and start advertising.
If they depart, remove their rainfo structure and continue.

Fixes PR/43881 and PR/47311

branches: 1.9.6;
- sprinkle const
- malloc + memset -> calloc
- free + malloc -> realloc
- syslog("%s", strerror(errno)) -> syslog("%m")

Add RDNSS and DNSSL support, RFC6106.
Replace custom lists with TAILQ lists.
Clean up plently of signed vs unsigned warnings and set WARNS=4.

Adapted from FreeBSD.

branches: 1.7.16; 1.7.42;
NDP-related improvements:
RFC4191
- supports host-side router-preference

RFC3542
- if DAD fails on a interface, disables IPv6 operation on the
interface
- don't advertise MLD report before DAD finishes

Others
- fixes integer overflow for valid and preferred lifetimes
- improves timer granularity for MLD, using callout-timer.
- reflects rtadvd's IPv6 host variable information into kernel
(router only)
- adds a sysctl option to enable/disable pMTUd for multicast
packets
- performs NUD on PPP/GRE interface by default
- Redirect works regardless of ip6_accept_rtadv
- removes RFC1885-related code

From the KAME project via SUZUKI Shinsuke.
Reviewed by core.

sync with latest kame.
- make icmp6.h spec conformant to 2292bis-02, regarding to router reumbering
flag bit.
- latest rtadvd.

sync with latest kame tree.
- reduce chances for signal handler rae condition
- decrease chances for misconfiguration
- feedbacks from router renumbering protocol bakeoff

sync with sys/netinet/icmp6.h change (no bitfield for router renumber).
more logging. improve error handling/garbage collection. sync with kame.

branches: 1.3.4;
sync with latest kame.
- decrease warning level on missing rtadvd.conf (actually, the file
can be omitted)
- strict prototype
- gather stats better, emit stats on SIGUSR1 to /var/run

fix for 64bit arch, where sizeof(size_t) != sizeof(int).
add NetBSD RCS ID.

rtadvd: advertise IPv6 prefix info via router advertisement.
(to be run on routers)

branches: 1.1.2;
Change the meaning of the 'D' flag to print errors to stderr instead of
syslog(3) and exit if poll(2) fails (intended to be used with unit-tests).

sync with latest kame.
- decrease warning level on missing rtadvd.conf (actually, the file
can be omitted)
- strict prototype
- gather stats better, emit stats on SIGUSR1 to /var/run

fix for 64bit arch, where sizeof(size_t) != sizeof(int).
add NetBSD RCS ID.

rtadvd: advertise IPv6 prefix info via router advertisement.
(to be run on routers)

Introduce rump.rtadvd

It is used to write ATF tests for RA.

From s-yamaguchi@IIJ.

rtadvd: Remove router renumbering - it's been disable for years

branches: 1.21.2;
Fix some unaligned pointer issues.

branches: 1.20.2;
Change the meaning of the 'D' flag to print errors to stderr instead of
syslog(3) and exit if poll(2) fails (intended to be used with unit-tests).

branches: 1.19.8;
Introduce rump.rtadvd

It is used to write ATF tests for RA.

From s-yamaguchi@IIJ.

Use %m in syslog(3) instead of %s strerror(3).

Use clock_gettime(2) instead of gettimeofday(2) so we can use a monotonic
clock rather than the wall clock.
Use timespec rather than timeval structs to make this transition easier.
Kill custom timeval comparison functions in favor of timespeccmp(3).

Fix typo. Reported in PR/47823.

Remove the iflist array and store ifflags in rainfo.

Add support for SIGHUP to re-read the configuration for each interface.
If an invalid configuration is found, we continue to use the old one;
otherwise we expire the current one and then start advertising the new one.

Specififed interfaces don't have to exist at startup.
If specified interfaces arrive, load their config and start advertising.
If they depart, remove their rainfo structure and continue.

Fixes PR/43881 and PR/47311

branches: 1.14.6;
Add RDNSS and DNSSL support, RFC6106.
Replace custom lists with TAILQ lists.
Clean up plently of signed vs unsigned warnings and set WARNS=4.

Adapted from FreeBSD.

branches: 1.13.42;
u_char -> char for several things:
- inet_ntop()
- if_indextoname()
- variable assignment matching
char -> u_char in one place for variable assignment matching

NDP-related improvements:
RFC4191
- supports host-side router-preference

RFC3542
- if DAD fails on a interface, disables IPv6 operation on the
interface
- don't advertise MLD report before DAD finishes

Others
- fixes integer overflow for valid and preferred lifetimes
- improves timer granularity for MLD, using callout-timer.
- reflects rtadvd's IPv6 host variable information into kernel
(router only)
- adds a sysctl option to enable/disable pMTUd for multicast
packets
- performs NUD on PPP/GRE interface by default
- Redirect works regardless of ip6_accept_rtadv
- removes RFC1885-related code

From the KAME project via SUZUKI Shinsuke.
Reviewed by core.

Don't compare an int to NULL.

byebye __FUNCTIION__. sync w/kame

KNF, strlcpy, memory leak fix, random other cleanups. sync w/kame

correct bitmask computation. more KNF. sync w/kame

sync with latest kame.
- make icmp6.h spec conformant to 2292bis-02, regarding to router reumbering
flag bit.
- latest rtadvd.

sync with latest kame tree.
- reduce chances for signal handler rae condition
- decrease chances for misconfiguration
- feedbacks from router renumbering protocol bakeoff

sync with sys/netinet/icmp6.h change (no bitfield for router renumber).
more logging. improve error handling/garbage collection. sync with kame.

branches: 1.4.4;
sync with latest kame.
- decrease warning level on missing rtadvd.conf (actually, the file
can be omitted)
- strict prototype
- gather stats better, emit stats on SIGUSR1 to /var/run

bring in latest kame tree. this fixes unclosed file descdriptor
in router renumbering case.

fix for 64bit arch, where sizeof(size_t) != sizeof(int).
add NetBSD RCS ID.

rtadvd: advertise IPv6 prefix info via router advertisement.
(to be run on routers)

rtadvd: Remove router renumbering - it's been disable for years

branches: 1.6.2;
White space police.

branches: 1.5.38;
Add RDNSS and DNSSL support, RFC6106.
Replace custom lists with TAILQ lists.
Clean up plently of signed vs unsigned warnings and set WARNS=4.

Adapted from FreeBSD.

branches: 1.4.56;
sync with latest kame.
- make icmp6.h spec conformant to 2292bis-02, regarding to router reumbering
flag bit.
- latest rtadvd.

sync with latest kame.
- decrease warning level on missing rtadvd.conf (actually, the file
can be omitted)
- strict prototype
- gather stats better, emit stats on SIGUSR1 to /var/run

fix for 64bit arch, where sizeof(size_t) != sizeof(int).
add NetBSD RCS ID.

rtadvd: advertise IPv6 prefix info via router advertisement.
(to be run on routers)

Remove -M from SYNOPSIS as well.

rtadvd: Remove router renumbering - it's been disable for years

rtadvd: Add C flag to control the zeroing of the leaving configuration

This is only intended to assist the testing of clients which consume
Router Advertisement messages, such as dhcpcd(8).

branches: 1.26.4; 1.26.6;
Change the meaning of the 'D' flag to print errors to stderr instead of
syslog(3) and exit if poll(2) fails (intended to be used with unit-tests).

branches: 1.25.6;
Support -p <pidfile> option

It's needed to avoid using /var/run/rtadvd.pid on ATF tests and
run multiple instances of rump.rtadvd on a test.

branches: 1.24.12;
Formatting nit.

Remove the iflist array and store ifflags in rainfo.

Add support for SIGHUP to re-read the configuration for each interface.
If an invalid configuration is found, we continue to use the old one;
otherwise we expire the current one and then start advertising the new one.

Specififed interfaces don't have to exist at startup.
If specified interfaces arrive, load their config and start advertising.
If they depart, remove their rainfo structure and continue.

Fixes PR/43881 and PR/47311

branches: 1.22.4; 1.22.10;
Sort sections.

branches: 1.21.16;
NDP-related improvements:
RFC4191
- supports host-side router-preference

RFC3542
- if DAD fails on a interface, disables IPv6 operation on the
interface
- don't advertise MLD report before DAD finishes

Others
- fixes integer overflow for valid and preferred lifetimes
- improves timer granularity for MLD, using callout-timer.
- reflects rtadvd's IPv6 host variable information into kernel
(router only)
- adds a sysctl option to enable/disable pMTUd for multicast
packets
- performs NUD on PPP/GRE interface by default
- Redirect works regardless of ip6_accept_rtadv
- removes RFC1885-related code

From the KAME project via SUZUKI Shinsuke.
Reviewed by core.

Small improvements. Sort options. From jmc@openbsd.

Consistently use 'RFC 1234' instead of 'RFC1234' or 'RFC-1234'.
From jmc@openbsd.

ipng->IPng, from Igor Sobrado in PR misc/20755 (though its a nit, ipng is fine.

Grammar improvements.

KNF, strlcpy, memory leak fix, random other cleanups. sync w/kame

Generate <>& symbolically. I'm avoiding .../dist/... directories for now.

Use standard headers.

avoid infinite loop when -s is specified (select loop mistake).
make agetent() 32bit clean. KAME PR 127.
disable -R (router renumbering receiver). sync with kame.

sync with latest kame tree.
- reduce chances for signal handler rae condition
- decrease chances for misconfiguration
- feedbacks from router renumbering protocol bakeoff

Grammatical and formatting cleanups.

For commands and utilities, use EXIT STATUS rather than RETURN VALUES or
DIAGNOSTICS as appropriate (and documented in mdoc(7)).

sync with sys/netinet/icmp6.h change (no bitfield for router renumber).
more logging. improve error handling/garbage collection. sync with kame.

branches: 1.8.4;
sync with latest kame.
- decrease warning level on missing rtadvd.conf (actually, the file
can be omitted)
- strict prototype
- gather stats better, emit stats on SIGUSR1 to /var/run

bring in latest kame tree. this fixes unclosed file descdriptor
in router renumbering case.

add -R (accept router renumbering packet). now router renumbering is disabled
by default for ipsec config twists.
dies gracefully on SIGTERM.

fix pathname for rtadvd.conf. (/etc/rtadvd.conf for netbsd-current)

grammar fix. sync with latest KAME.

fix pathname to /etc/rtadvd.conf.
NetBSD PR: 8966

branches: 1.2.4;
sync with KAME/NetBSD14.
add warning about upstream/downstream advertisement.

rtadvd: advertise IPv6 prefix info via router advertisement.
(to be run on routers)

Fix typos in comments, mainly s/calcurate/calculate/.

branches: 1.82.8;
call tzset() before chroot so we initialize our timezone data

fix misplaced paren, add missing va_end()

- remove extra \n from stderr logging
- add string message types
- sprinkle const

Use wrapper name for call to setsockopt(2), NFC for non-rump builds.

If we could not lock the pid file, don't continue as we end up with multiple
rtadvd's (thanks roy@)

warn only for > INFO level messages.

Print errors to stderr until we daemonize.
Fix typo.

Remove dst variable that was only set but not used.

(This broke the build for me.)

Update getopt string.

Remove -M. Add -C (the code is there and documented, even if noone could
activate it...).
Sync usage with manpage.

rtadvd: Remove disabled use of SIOCGIFPREFIX_IN6

It's not been enabled since the functionality was added to ifconfig(8)
many many years ago.

rtadvd: Remove router renumbering - it's been disable for years

rtadvd: Add C flag to control the zeroing of the leaving configuration

This is only intended to assist the testing of clients which consume
Router Advertisement messages, such as dhcpcd(8).

rtadvd: Fix reloading configuration killing interface timers

branches: 1.69.2;
- die sooner (if we got interrupted)
- when we finish resending exit.

adjust to new expandm.

use expandm from libwrap.

branches: 1.66.2;
Back out part of the prior commit where we added space for IPV6_HOPLIMIT
to the sending control message buffer.
That code never worked on ERLITE, so I elected to set socket options
instead but forgot to revert this part.

Unicast solicited RA's as per RFC 7772.

This is done by having a secondary timer against rainfo so we
can delay unicasting by the required randomised amount of time
without affecting the unsolicited RA timer.

Insist on newer socket options.

Use pidifle_lock(3)

Punt dead code

White space police.

Fix some unaligned pointer issues.

branches: 1.59.2;

When sending log messages to stderr, append the \n that syslog does not need.

Mark expandm as preserving format strings.

Change the meaning of the 'D' flag to print errors to stderr instead of
syslog(3) and exit if poll(2) fails (intended to be used with unit-tests).

PR/52618: Shinichi Doyashiki: Don't exit if adding interface to multicast
group fails. This happens with empty vlan interfaces

- make syscalls checks against -1
- fix errors to print %s: instead of <%s>

XXX: if_vlan is the only pseudo interface in net/ that returns such an
error..

Don't start another copy of rtadvd if one is running.

KNF, fix time printing formats.

branches: 1.53.4;
Use RO_MSGFILTER.

branches: 1.52.2;
Support -p <pidfile> option

It's needed to avoid using /var/run/rtadvd.pid on ATF tests and
run multiple instances of rump.rtadvd on a test.

branches: 1.51.2;
Introduce rump.rtadvd

It is used to write ATF tests for RA.

From s-yamaguchi@IIJ.

Fix regression on sending RA messages

r1.48 dropped hoplimit cmsg but forgot to adjust cmsg buffer length.

Reported by Timo Buhrmester

Use %m in syslog(3) instead of %s strerror(3).

Set the hoplimit of 255 as specified in RFC 4861 section 4.2
using the IPV6_MULTICAST_HOPS socket option rather than using CMSG
when constructing each message.

Use clock_gettime(2) instead of gettimeofday(2) so we can use a monotonic
clock rather than the wall clock.
Use timespec rather than timeval structs to make this transition easier.
Kill custom timeval comparison functions in favor of timespeccmp(3).

Expect long long to be larger than uint32_t and use llabs after casting
the uint32_t.

spelling correction - recieved -> received

Add _rtadvd user and group.
Add a chroot dir for the _rtadvd user.
Drop privs to the user _rtadvd after acquiring our socket.
When rc.d/rtadvd starts or reloads, the rtadvd config file is copied
into the chroot before starting or reloading rtadvd itself.
Create a symlink from /var/run/rtadvd.dump to the chroot

Inital idea from OpenBSD patch rtadvd.c r1.36

If we die and there are no timers, just exit.

Check valid lengths of RDNSS and DNSSL options when rtadvd receives RA/RS.
rtadvd doesn't actually look into the option itself, but it may do in the
future to warn about consistency.

Intsead of forcing out each RA at shutdown and sleeping we now use
the existing timer model and wait for each RA to expire itself after
sending the required number of transmissions.

This allows for a faster and saner shutdown.

Remove debug stuff.

Remove the iflist array and store ifflags in rainfo.

Add support for SIGHUP to re-read the configuration for each interface.
If an invalid configuration is found, we continue to use the old one;
otherwise we expire the current one and then start advertising the new one.

Specififed interfaces don't have to exist at startup.
If specified interfaces arrive, load their config and start advertising.
If they depart, remove their rainfo structure and continue.

Fixes PR/43881 and PR/47311

branches: 1.38.6;
- sprinkle const
- malloc + memset -> calloc
- free + malloc -> realloc
- syslog("%s", strerror(errno)) -> syslog("%m")

Use __dead. No prototype for main.

Add RDNSS and DNSSL support, RFC6106.
Replace custom lists with TAILQ lists.
Clean up plently of signed vs unsigned warnings and set WARNS=4.

Adapted from FreeBSD.

branches: 1.35.6;
fix -Wshadow

branches: 1.34.8; 1.34.20;
* Don't include headers twice
* Remove a few trailing whitespaces
* Rearrange and join to one #if for some headers

Patch contributed by Slava Semushin <slava.semushin@gmail.com>
in private mail.

PR/18906: roskens at elfin dot net: misc. select() to poll() updates.

Adapted to -current by myself, thanks for the patch!

Make sure the buffer used to retrieve routing message from the kernel
is properly aligned. This should fix PR bin/34124.

u_char -> char for several things:
- inet_ntop()
- if_indextoname()
- variable assignment matching
char -> u_char in one place for variable assignment matching

NDP-related improvements:
RFC4191
- supports host-side router-preference

RFC3542
- if DAD fails on a interface, disables IPv6 operation on the
interface
- don't advertise MLD report before DAD finishes

Others
- fixes integer overflow for valid and preferred lifetimes
- improves timer granularity for MLD, using callout-timer.
- reflects rtadvd's IPv6 host variable information into kernel
(router only)
- adds a sysctl option to enable/disable pMTUd for multicast
packets
- performs NUD on PPP/GRE interface by default
- Redirect works regardless of ip6_accept_rtadv
- removes RFC1885-related code

From the KAME project via SUZUKI Shinsuke.
Reviewed by core.

Sync usage with man page.

branches: 1.28.4; 1.28.6;
correct use of sizeof

add missing ND option length validation. from kame

null commit

poll.h, not sys/poll.h

Set fd of unused pollfd entries to -1.

select() -> poll()

signal handler must take "int" arg. from deraadt, sync w/kame

byebye __FUNCTIION__. sync w/kame

use arc4random

avoid fd_set overrun. sync w/kame

KNF, strlcpy, memory leak fix, random other cleanups. sync w/kame

branches: 1.17.2;
use pidfile(3). sync w/kame

minor sync w/kame (prototype location)

correct bitmask computation. more KNF. sync w/kame

KNF. a memory leak fix. sync w/kame

daemon(3) has to be called before opening file descriptors.
noticed by markus@openbsd, sync with kame

avoid infinite loop when -s is specified (select loop mistake).
make agetent() 32bit clean. KAME PR 127.
disable -R (router renumbering receiver). sync with kame.

sync with latest kame tree.
- reduce chances for signal handler rae condition
- decrease chances for misconfiguration
- feedbacks from router renumbering protocol bakeoff

sync with sys/netinet/icmp6.h change (no bitfield for router renumber).
more logging. improve error handling/garbage collection. sync with kame.

branches: 1.9.4;
sync with latest kame.
- decrease warning level on missing rtadvd.conf (actually, the file
can be omitted)
- strict prototype
- gather stats better, emit stats on SIGUSR1 to /var/run

Cast timeval members to types we know the printf conversions of.

bring in latest kame tree. this fixes unclosed file descdriptor
in router renumbering case.

don't assume CMSG_xx are constant. (sync with latest kame)

add -R (accept router renumbering packet). now router renumbering is disabled
by default for ipsec config twists.
dies gracefully on SIGTERM.

sync with recent KAME. give a better debugging information.

sync with more recent KAME.

branches: 1.2.4;
fix for 64bit arch, where sizeof(size_t) != sizeof(int).
add NetBSD RCS ID.

rtadvd: advertise IPv6 prefix info via router advertisement.
(to be run on routers)

Use documentation prefix.

NDP-related improvements:
RFC4191
- supports host-side router-preference

RFC3542
- if DAD fails on a interface, disables IPv6 operation on the
interface
- don't advertise MLD report before DAD finishes

Others
- fixes integer overflow for valid and preferred lifetimes
- improves timer granularity for MLD, using callout-timer.
- reflects rtadvd's IPv6 host variable information into kernel
(router only)
- adds a sysctl option to enable/disable pMTUd for multicast
packets
- performs NUD on PPP/GRE interface by default
- Redirect works regardless of ip6_accept_rtadv
- removes RFC1885-related code

From the KAME project via SUZUKI Shinsuke.
Reviewed by core.

"addrs" is not needed any more

make it clearer that /etc/rtadvd.conf is optional (normally,
configurations were derived from kernel interface settings).

install rtadvd.conf into /usr/share/exapmles/rtadvd, instead of /etc.

sync with kame.

Minor improvements.

Update values from RFC 8319

branches: 1.18.28;
Add support for the noifprefix keyword which stops rtadvd(8) gathing prefix
information from the interface if no addrs are present in rtadvd.conf(5).

branches: 1.17.2;
Add capfile(5) to describe the termcap format.
Adjust various man pages and other documentation to point to capfile(5)
instead of termcap(5).
Remove getcap(3) as curses hasn't been building it for a long time.
Punt wrterm.c as tset no longer uses it.

- improve wording;
- replace references to resolver(5) with ones to resolv.conf(5);
- remove references to FreeBSD (which were copied 1:1 from their
man page).

From patch by Bug Hunting.

Add RDNSS and DNSSL support, RFC6106.
Replace custom lists with TAILQ lists.
Clean up plently of signed vs unsigned warnings and set WARNS=4.

Adapted from FreeBSD.

branches: 1.14.6;
Use documentation prefix.
Drop trailing whitespace.
Remove repeated word.
Bump date.

Kill -offset without argument.

branches: 1.12.16;
NDP-related improvements:
RFC4191
- supports host-side router-preference

RFC3542
- if DAD fails on a interface, disables IPv6 operation on the
interface
- don't advertise MLD report before DAD finishes

Others
- fixes integer overflow for valid and preferred lifetimes
- improves timer granularity for MLD, using callout-timer.
- reflects rtadvd's IPv6 host variable information into kernel
(router only)
- adds a sysctl option to enable/disable pMTUd for multicast
packets
- performs NUD on PPP/GRE interface by default
- Redirect works regardless of ip6_accept_rtadv
- removes RFC1885-related code

From the KAME project via SUZUKI Shinsuke.
Reviewed by core.

Bump date for recent changes.

need "a". from jmc@openbsd

sync manpage with previous change (addrs# deprecdated)

between with three es, and positive with two is.

Drop a .Pp.

make it clearer that /etc/rtadvd.conf is optional (normally,
configurations were derived from kernel interface settings).

install rtadvd.conf into /usr/share/exapmles/rtadvd, instead of /etc.

sync with kame.

sync with latest kame tree.
- reduce chances for signal handler rae condition
- decrease chances for misconfiguration
- feedbacks from router renumbering protocol bakeoff

sync with sys/netinet/icmp6.h change (no bitfield for router renumber).
more logging. improve error handling/garbage collection. sync with kame.

branches: 1.3.4;
sync with latest kame.
- decrease warning level on missing rtadvd.conf (actually, the file
can be omitted)
- strict prototype
- gather stats better, emit stats on SIGUSR1 to /var/run

fix typo (no comma).
use NetBSD RCS ID, retain original.

rtadvd: advertise IPv6 prefix info via router advertisement.
(to be run on routers)

fix various typos in comments.

- remove extra \n from stderr logging
- add string message types
- sprinkle const

rtadvd: Add C flag to control the zeroing of the leaving configuration

This is only intended to assist the testing of clients which consume
Router Advertisement messages, such as dhcpcd(8).

branches: 1.19.2; 1.19.4;
Update values from RFC 8319

Make the #defines more readable

Unicast solicited RA's as per RFC 7772.

This is done by having a secondary timer against rainfo so we
can delay unicasting by the required randomised amount of time
without affecting the unsolicited RA timer.

White space police.

branches: 1.15.10;
Fix the default value of rltime

According to rtadvd.conf(5), the default value of rltime is 1800 seconds.

PR bin/51994

branches: 1.14.2; 1.14.4;
Use clock_gettime(2) instead of gettimeofday(2) so we can use a monotonic
clock rather than the wall clock.
Use timespec rather than timeval structs to make this transition easier.
Kill custom timeval comparison functions in favor of timespeccmp(3).

branches: 1.13.6; 1.13.8; 1.13.12;
Add _rtadvd user and group.
Add a chroot dir for the _rtadvd user.
Drop privs to the user _rtadvd after acquiring our socket.
When rc.d/rtadvd starts or reloads, the rtadvd config file is copied
into the chroot before starting or reloading rtadvd itself.
Create a symlink from /var/run/rtadvd.dump to the chroot

Inital idea from OpenBSD patch rtadvd.c r1.36

Remove the iflist array and store ifflags in rainfo.

Add support for SIGHUP to re-read the configuration for each interface.
If an invalid configuration is found, we continue to use the old one;
otherwise we expire the current one and then start advertising the new one.

Specififed interfaces don't have to exist at startup.
If specified interfaces arrive, load their config and start advertising.
If they depart, remove their rainfo structure and continue.

Fixes PR/43881 and PR/47311

branches: 1.11.2; 1.11.6; 1.11.8; 1.11.10;
Add RDNSS and DNSSL support, RFC6106.
Replace custom lists with TAILQ lists.
Clean up plently of signed vs unsigned warnings and set WARNS=4.

Adapted from FreeBSD.

branches: 1.10.16; 1.10.42;
NDP-related improvements:
RFC4191
- supports host-side router-preference

RFC3542
- if DAD fails on a interface, disables IPv6 operation on the
interface
- don't advertise MLD report before DAD finishes

Others
- fixes integer overflow for valid and preferred lifetimes
- improves timer granularity for MLD, using callout-timer.
- reflects rtadvd's IPv6 host variable information into kernel
(router only)
- adds a sysctl option to enable/disable pMTUd for multicast
packets
- performs NUD on PPP/GRE interface by default
- Redirect works regardless of ip6_accept_rtadv
- removes RFC1885-related code

From the KAME project via SUZUKI Shinsuke.
Reviewed by core.

KNF, strlcpy, memory leak fix, random other cleanups. sync w/kame

minor sync w/kame (prototype location)

KNF. a memory leak fix. sync w/kame

sync with latest kame tree.
- reduce chances for signal handler rae condition
- decrease chances for misconfiguration
- feedbacks from router renumbering protocol bakeoff

sync with sys/netinet/icmp6.h change (no bitfield for router renumber).
more logging. improve error handling/garbage collection. sync with kame.

branches: 1.4.4;
sync with latest kame.
- decrease warning level on missing rtadvd.conf (actually, the file
can be omitted)
- strict prototype
- gather stats better, emit stats on SIGUSR1 to /var/run

bring in latest kame tree. this fixes unclosed file descdriptor
in router renumbering case.

fix for 64bit arch, where sizeof(size_t) != sizeof(int).
add NetBSD RCS ID.

rtadvd: advertise IPv6 prefix info via router advertisement.
(to be run on routers)

need <time.h> for clock_gettime

branches: 1.1.2;
Introduce rump.rtadvd

It is used to write ATF tests for RA.

From s-yamaguchi@IIJ.

Introduce rump.rtadvd

It is used to write ATF tests for RA.

From s-yamaguchi@IIJ.

print function names as %s: not <%s> everywhere for consistency.

s/upate/update/ in comment.

branches: 1.18.2;
Lack of timeout is a programming error, so use an assert in it's place.
While here, improve the error reported if malloc fails.

Use EXIT_FAILURE instead of an arbtitary number.

Allow timers to exist but be inactive.
This will be used in a future commit.

White space police.

branches: 1.14.2;
Change the meaning of the 'D' flag to print errors to stderr instead of
syslog(3) and exit if poll(2) fails (intended to be used with unit-tests).

branches: 1.13.8;
Introduce rump.rtadvd

It is used to write ATF tests for RA.

From s-yamaguchi@IIJ.

Use clock_gettime(2) instead of gettimeofday(2) so we can use a monotonic
clock rather than the wall clock.
Use timespec rather than timeval structs to make this transition easier.
Kill custom timeval comparison functions in favor of timespeccmp(3).

Remove the iflist array and store ifflags in rainfo.

Add support for SIGHUP to re-read the configuration for each interface.
If an invalid configuration is found, we continue to use the old one;
otherwise we expire the current one and then start advertising the new one.

Specififed interfaces don't have to exist at startup.
If specified interfaces arrive, load their config and start advertising.
If they depart, remove their rainfo structure and continue.

Fixes PR/43881 and PR/47311

branches: 1.10.6;
Add RDNSS and DNSSL support, RFC6106.
Replace custom lists with TAILQ lists.
Clean up plently of signed vs unsigned warnings and set WARNS=4.

Adapted from FreeBSD.

branches: 1.9.42;
NDP-related improvements:
RFC4191
- supports host-side router-preference

RFC3542
- if DAD fails on a interface, disables IPv6 operation on the
interface
- don't advertise MLD report before DAD finishes

Others
- fixes integer overflow for valid and preferred lifetimes
- improves timer granularity for MLD, using callout-timer.
- reflects rtadvd's IPv6 host variable information into kernel
(router only)
- adds a sysctl option to enable/disable pMTUd for multicast
packets
- performs NUD on PPP/GRE interface by default
- Redirect works regardless of ip6_accept_rtadv
- removes RFC1885-related code

From the KAME project via SUZUKI Shinsuke.
Reviewed by core.

byebye __FUNCTIION__. sync w/kame

KNF, strlcpy, memory leak fix, random other cleanups. sync w/kame

correct bitmask computation. more KNF. sync w/kame

KNF. a memory leak fix. sync w/kame

sync with sys/netinet/icmp6.h change (no bitfield for router renumber).
more logging. improve error handling/garbage collection. sync with kame.

branches: 1.3.4;
sync with latest kame.
- decrease warning level on missing rtadvd.conf (actually, the file
can be omitted)
- strict prototype
- gather stats better, emit stats on SIGUSR1 to /var/run

fix for 64bit arch, where sizeof(size_t) != sizeof(int).
add NetBSD RCS ID.

rtadvd: advertise IPv6 prefix info via router advertisement.
(to be run on routers)

Allow timers to exist but be inactive.
This will be used in a future commit.

White space police.

branches: 1.8.14;
Use clock_gettime(2) instead of gettimeofday(2) so we can use a monotonic
clock rather than the wall clock.
Use timespec rather than timeval structs to make this transition easier.
Kill custom timeval comparison functions in favor of timespeccmp(3).

Add RDNSS and DNSSL support, RFC6106.
Replace custom lists with TAILQ lists.
Clean up plently of signed vs unsigned warnings and set WARNS=4.

Adapted from FreeBSD.

branches: 1.6.42;
NDP-related improvements:
RFC4191
- supports host-side router-preference

RFC3542
- if DAD fails on a interface, disables IPv6 operation on the
interface
- don't advertise MLD report before DAD finishes

Others
- fixes integer overflow for valid and preferred lifetimes
- improves timer granularity for MLD, using callout-timer.
- reflects rtadvd's IPv6 host variable information into kernel
(router only)
- adds a sysctl option to enable/disable pMTUd for multicast
packets
- performs NUD on PPP/GRE interface by default
- Redirect works regardless of ip6_accept_rtadv
- removes RFC1885-related code

From the KAME project via SUZUKI Shinsuke.
Reviewed by core.

KNF. a memory leak fix. sync w/kame

sync with sys/netinet/icmp6.h change (no bitfield for router renumber).
more logging. improve error handling/garbage collection. sync with kame.

branches: 1.3.4;
sync with latest kame.
- decrease warning level on missing rtadvd.conf (actually, the file
can be omitted)
- strict prototype
- gather stats better, emit stats on SIGUSR1 to /var/run

fix for 64bit arch, where sizeof(size_t) != sizeof(int).
add NetBSD RCS ID.

rtadvd: advertise IPv6 prefix info via router advertisement.
(to be run on routers)