usr.sbin: Remove ancient SCCS tags.

Remove ancient SCCS tags from the tree, automated scripting, with two
minor fixup to keep things compiling. All the common forms in the tree
were removed with a perl script.

Sponsored by: Netflix

Remove $FreeBSD$: one-line nroff pattern

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

Bump amount of queued packets in for unresolved ARP/NDP entries to 16.

Currently default behaviour is to keep only 1 packet per unresolved entry.
Ability to queue more than one packet was added 10 years ago, in r215207,
though the default value was kep intact.

Things have changed since that time. Systems tend to initiate multiple
connections at once for a variety of reasons.
For example, recent kern/252278 bug report describe happy-eyeball DNS
behaviour sending multiple requests to the DNS server.

The primary driver for upper value for the queue length determination is
memory consumption. Remote actors should not be able to easily exhaust
local memory by sending packets to unresolved arp/ND entries.

For now, bump value to 16 packets, to match Darwin implementation.

The proper approach would be to switch the limit to calculate memory
consumption instead of packet count and limit based on memory.

We should MFC this with a variation of D22447.

Reviewers: #manpages, #network, bz, emaste

Reviewed By: emaste, gbe(doc), jilles(doc)
MFC after: 1 month
Differential Revision: https://reviews.freebsd.org/D28068

Renumber copyright clause 4

Renumber cluase 4 to 3, per what everybody else did when BSD granted
them permission to remove clause 3. My insistance on keeping the same
numbering for legal reasons is too pedantic, so give up on that point.

Submitted by: Jan Schaumann <jschauma@stevens.edu>
Pull Request: https://github.com/freebsd/freebsd/pull/96

Additional cleanup of the arp(4) man page after r306652

Submitted by: David A. Bright <david.a.bright@dell.com>
Requested by: wblock
Reviewed by: wblock
MFC after: 23 days
Sponsored by: Dell EMC
Differential Revision: https://reviews.freebsd.org/D8183

Update arp(4) to document the net.link.ether.inet.garp_rexmit_count sysctl.

Submitted by: David A. Bright <david.a.bright@dell.com>
Requested by: markj
Reviewed by: markj, badger
MFC after: 4 weeks
X-MFC with: r306577
Sponsored by: Dell EMC
Differential Revision: https://reviews.freebsd.org/D8136

Remove net.link.ether.inet.useloopback sysctl tunable. It was always on by
default from the very beginning. It was placed in wrong namespace
net.link.ether, originally it had been at another wrong namespace. It was
incorrectly documented at incorrect manual page arp(8). Since new-ARP commit,
the tunable have been consulted only on route addition, and ignored on route
deletion. Behaviour of a system with tunable turned off is not fully correct,
and has no advantages comparing to normal behavior.

Rate limit the number of remotely triggered ARP log messages
to 1 log message per second.

Provide a sysctl switch that allows to install ARP entries
with multicast bit set. FreeBSD refuses to install such
entries since 9.0, and this broke installations running
Microsoft NLB, which are violating standards.

Tested by: Tarasov Oleg <oleg_tarasov sg-tea.com>

Explicitly document all variables in the net.link.ether.inet MIB.

Minor spelling fixes.

mdoc: add missing width argument to Bl -tag.

mdoc: terminate quoted strings.

Reviewed by: brueffer

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

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.

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

net.link.ether.inet.prune_intvl no longer exists.

Markup fixes.

Add a knob to suppress logging of attempts to modify
permanent ARP entries.

Submitted by: Andrew Alcheyev <buddy telenet.ru>

Improve the documentation of "proxyall" knob, somewhat: we do not
proxy for hosts that are reachable through the same interface the
request came in from. This feature is mainly for hosts reachable
through some P2P link, e.g. the gif(4) tunnel.

Some fixes for last commit.

Submitted by: ru

- Document last change to ARP behavior.
- Document several undocumented sysctl variables.
- Fix spelling of few diagnostics.

Per letter dated July 22, 1999, delete clause 3 from code directly
from Berkeley.

Mechanically kill hard sentence breaks.

mdoc(7) police

Submitted by: ru

Document the behaviour of the net.link.ether.inet.proxyall sysctl MIB
variable.

PR: docs/21826
Reviewed by: ru
Requested by: Bernd Luevelsmeyer

mdoc(7) cleanups (use .Va, not .Dv, for sysctls.)

Reviewed by: ru

mdoc(7) cleanup: Break up sentences so that they start on new lines.

Point out the existence of net.link.ether.inet.log_arp_movements.
Add sysctl(8) to the list of cross-referenced manual pages.

Update arp(4) to document the 'arp: foo is on if0 but got reply from
bar on if1' message.

PR: bin/48489
Requested by: ru

s/pseudo-device/device/

Correct old wording of the arp functionality.
We are long past the stage where we only had ARP working for 10 Mb/s.

PR: 35604
Submitted by: Gary W. Swearingen <swear@blarg.net>
Additional comments by: Mike DeGraw-Bertsch <mbertsch@radioactivedata.org>

Remove whitespace at EOL.

mdoc(7) police: removed HISTORY info from the .Os call.

mdoc(7) police: Er macro usage cleanup.

Avoid use of direct troff requests in mdoc(7) manual pages.

$Id$ -> $FreeBSD$

Use Cd macro instead of Em for SYNOPSIS, as do other section 4 pages.
Added $Id$.

PR: docs/10494

Update wording of the one message that was in the DIAGNOSTICS section.
Add three other common messages.

This should be in 2.2 to go with the netinet/if_ether.c rewording.

Get rid of update. Make man page installation work with our scheme
(and rename a few in the process).