Copy stable/9 to releng/9.3 as part of the 9.3-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Copy head to stable/9 as part of 9.0-RELEASE release cycle.

Approved by: re (implicit)

Provide a more user friendly URL to the IETF site in gif(4).

Pointed out by: dougb
MFC after: 3 days
Approved by: re (hrs)

Fix various broken links in manual pages.

Submitted by: Michiel Overtoom (motoom % xs4all nl)
PR: 159130 159131 159132 159133 159134
159135 159136 159137 158138 159144
Approved by: re (kib)
MFC after: 3 days

Use the newly brought %U macro.

Fix and add a workaround on an issue of EtherIP packet with reversed
version field sent via gif(4)+if_bridge(4). The EtherIP
implementation found on FreeBSD 6.1, 6.2, 6.3, 7.0, 7.1, and 7.2 had
an interoperability issue because it sent the incorrect EtherIP
packets and discarded the correct ones.

This change introduces the following two flags to gif(4):

accept_rev_ethip_ver: accepts both correct EtherIP packets and ones
with reversed version field, if enabled. If disabled, the gif
accepts the correct packets only. This flag is enabled by
default.

send_rev_ethip_ver: sends EtherIP packets with reversed version field
intentionally, if enabled. If disabled, the gif sends the correct
packets only. This flag is disabled by default.

These flags are stored in struct gif_softc and can be set by
ifconfig(8) on per-interface basis.

Note that this is an incompatible change of EtherIP with the older
FreeBSD releases. If you need to interoperate older FreeBSD boxes and
new versions after this commit, setting "send_rev_ethip_ver" is
needed.

Reviewed by: thompsa and rwatson
Spotted by: Shunsuke SHINOMIYA
PR: kern/125003
MFC after: 2 weeks

Do not reference gifconfig, it is gone.

Sponsored by: Chaffee::Interactive

Clarify that gif doesn't do GRE tunnels.

MFC after: 2 weeks

Document route caching, how it can be enabled, and its consequences.

Wording by: cperciva

Remove a duplicated word.

Submitted by: Pawel Worach <pawel.worach@telia.com>

mdoc(7) police: Scheduled sweep.

gifconfig(8) was depricated.

Reported by: rwatson

mdoc(7) police: pseudo-devices are gone from -CURRENT.

Fix grammar 'the administrator'

PR: 39093
Submitted by: Mike Makonnen <makonnen@packbell.net>

mdoc(7) police: nits.

Make gif(4) nesting level and parallel tunnel support tunable at runtime
via sysctl's. The old #defines, MAX_GIF_NEST and XBONEHACK are
currently supported for backwards compatability, but will probably be
removed at some point in the future.

mdoc(7) police: tidy up previous delta.

Better document gif interface cloning intrastructure.

MFC After: 2 days

mdoc(7) police: removed hard sentence break.

Mention that gif interfaces are created at runtime and refer the
administrator to the ifconfig create command.

MFC after: 1 week

gif(4) is no longer a count device, reflect this change.

mdoc(7) police: fixed the "new sentence" bogons.

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

pseudo-device -> device in kernel config lines. Removed whitespace at EOL.
Reviewed by: joerg, dd

mdoc(7) police: normalize .Nd.

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

sync with kame. more security warnings

Backout previous changes. The period at the end is correct,
when it is the last of the sentences.

Specified by: mpp, sheldonh

Remove period at the end of Xr macro sentences.
(merge from KAME repository)

Obtained from: KAME project

Change .Os macro to an empty one to denote that the KAME files are
not FreeBSD specific.

Made happy: sheldonh

libipsec and IPsec related apps. (and some KAME related man pages)

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