Remove $FreeBSD$: two-line nroff pattern

Remove /^\.\\"\n\.\\"\s*\$FreeBSD\$$\n/

rtsol: introduce an 'always' script

In addition to the 'M' and 'O' scripts (for when 'Managed' and 'Other'
flags are set) also introduce an 'always' script that is called for any
router advertisement (so even if M and O are not set).

This is primarly useful for systems like pfSense that wish to be
informed of routers for further system configuration.

See also https://redmine.pfsense.org/issues/14072

Reviewed by: melifaro
Sponsored by: Rubicon Communications, LLC ("Netgate")
Differential Revision: https://reviews.freebsd.org/D39931

rtsold: Note network interfaces changing index when removed/inserted

Remove reference to PCMCIA. The issue is more generic than that. Also,
it does apply to FreeBSD, so no need to hedge about some OSes. The index
won't change if no other interfaces are created after the card is
removed, so note that it may change, not will change.

Suggested by: phk
Reviewed by: gleb
Sponsored by: Netflix

rtsol/rtsold: Add option to skip random delay

In accordance with a SHOULD in RFC 4861, rtsol and rtsold wait a
random time between zero and one (aka MAX_RTR_SOLICITATION_DELAY)
seconds before sending a Router Solicitation, in order to avoid
network congestion if many hosts come online at once. (The
question of how many hosts would be required to cause congestion
by each sending a single packet on a Gbps+ network is left to the
reader.)

The new option -i disables this wait and instructs rtsol and rtsold
to send the Router Solicitation immediately.

Reviewed by: bz, kp (earlier version)
MFC after: 1 week
Relnotes: yes
Sponsored by: https://www.patreon.com/cperciva
Differential Revision: https://reviews.freebsd.org/D32956

rtsold: pass sending router address to other and managed script

Reviewed by: markj
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D31518

rtsold: auto-probe point to point interfaces

rtsold works fine for point to point interfaces in manual mode but will
not auto-probe them.

Reviewed by: markj
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D31517

rtsol(d): add script for "M bit"

While we do support the "O bit" running a script (usually to start a
dhcpv6 client) we have no options for setups which set the "M bit" for,
e.g., static address assignment as in EC2.

Duplicate most of the "O bit" logic to also start a script for the
"M bit" with the one difference: if the "M bit" is set we will not
start the script for the "O bit" as well (per RFC 4861, Section 4.2).

Reviewed by: hrs, markj
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D26099

Clarify the description of the -u option.

MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation

- Fix wording. [1]
- Improve the descriptions in the FILES section. [2]

Reported by: Jason McIntyre [1]
Obtained from: NetBSD [2]
MFC after: 3 days

Correct the description of the -a option: rtsol(d) -a will in fact send out
router solicitations on multiple interfaces.

Reviewed by: hrs
MFC after: 1 week

Spelling fixes for usr.sbin/

- Add ":origin" label to the interface id for resolvconf(8). (r223149)
- Add -u option to enable adding :[RA-source-address] to the interface id.
(r223149)
- s/INET6_ADDRSTRLEN/sizeof(ntopbuf)/ (r223149)
- Fix a bug that can prevent -D from being overridden by -d. (r223149)
- /-P pidfile/-p pidfile/ for consistency with rtadvd(8). (r223149)
- Fix -F flag handling to support receiving RAs even when ip6.forwarding=1.
(r225150)

Approved by: re (kib)

- Implement RDNSS and DNSSL options (RFC 6106, IPv6 Router Advertisement
Options for DNS Configuration) into rtadvd(8) and rtsold(8). DNS
information received by rtsold(8) will go to resolv.conf(5) by
resolvconf(8) script. This is based on work by J.R. Oldroyd (kern/156259)
but revised extensively[1].

- rtadvd(8) now supports "noifprefix" to disable gathering on-link prefixes
from interfaces when no "addr" is specified[2]. An entry in rtadvd.conf
with "noifprefix" + no "addr" generates an RA message with no prefix
information option.

- rtadvd(8) now supports RTM_IFANNOUNCE message to fix crashes when an
interface is added or removed.

- Correct bogus ND_OPT_ROUTE_INFO value to one in RFC 4191.

Reviewed by: bz[1]
PR: kern/156259 [1]
PR: bin/152458 [2]

A new jail(8) with a configuration file, to replace the work currently done
by /etc/rc.d/jail.

mdoc: move remaining sections into consistent order

This pertains mostly to FILES, HISTORY, EXIT STATUS and AUTHORS sections.

Found by: mdocml lint run
Reviewed by: ru

Create the altix project branch. The altix project will add support
for the SGI Altix 350 to FreeBSD/ia64. The hardware used for porting
is a two-module system, consisting of a base compute module and a
CPU expansion module. SGI's NUMAFlex architecture can be an excellent
platform to test CPU affinity and NUMA-aware features in FreeBSD.

Add support for ND6_IFF_IFDISABLED and ND6_IFF_ACCEPT_RTADV to
the -F flag.

MFC after: 3 days

- rename the RETURN VALUES section to EXIT STATUS [1]
- convert to .Ex macro
- not bumping a date as this is not a real content change

Approved by: ru
MFC after: 3 days

- Import the HEAD csup code which is the basis for the cvsmode work.

Improve wording for -f and -F.

Fixed the misplaced $FreeBSD$.

Mechanically kill hard sentence breaks.

add -F flag, which configures sysctl(8) setting by rtsold
itself (rather than warn about the current setting).

Obtained from: KAME

- improved the -a option. it can probe a interface automatically when
the interface wake up. it can be started anytime even when there is
no network interface on the list of intarfaces in the kernel.
- get a correct link ID for each interface at initialization
(using scope libraries if HAVE_SCOPELIB is defined).
- fill in sin6_scope_id correctly before sendmsg().

Obtained from: KAME
MFC after: 1 week

Process the "O bit."
If the value of OtherConfigFlag changes from FALSE to TRUE, the
host should invoke the stateful autoconfiguration protocol,
requesting information.
[RFC 2462 Section 5.5.3]

Obtained from: KAME
MFC after: 1 week

mdoc(7) police: Deal with self-xrefs.

The .Nm utility

mdoc(7) police: Fixed the .Ex calls in manpages that describe more
than one utility.

PR: docs/30437
Submitted by: SUZUKI Koichi <koich@cac.co.jp>

mdoc(7) police: utilize the new .Ex macro.

mdoc(7) police:

Avoid using parenthesis enclosure macros (.Pq and .Po/.Pc) with plain text.
Not only this slows down the mdoc(7) processing significantly, but it also
has an undesired (in this case) effect of disabling hyphenation within the
entire enclosed block.

Sync with recent KAME.
This work was based on kame-20010528-freebsd43-snap.tgz and some
critical problem after the snap was out were fixed.
There are many many changes since last KAME merge.

TODO:
- The definitions of SADB_* in sys/net/pfkeyv2.h are still different
from RFC2407/IANA assignment because of binary compatibility
issue. It should be fixed under 5-CURRENT.
- ip6po_m member of struct ip6_pktopts is no longer used. But, it
is still there because of binary compatibility issue. It should
be removed under 5-CURRENT.

Reviewed by: itojun
Obtained from: KAME
MFC after: 3 weeks

mdoc(7) police: use the new features of the Nm macro.

Sync with KAME. Format string auditing, and add -a flag to autoprobe
interfaces.

Obtained from: KAME

Sync with latest KAME.

Obtained from: KAME

Getaddrinfo(), getnameinfo(), and etc support in libc/net.
Several udp and raw apps IPv6 support.

Reviewed by: freebsd-arch, cvs-committers
Obtained from: KAME project