Remove $FreeBSD$: alt two-line .c pattern

Remove /^\s*__RCSID\("\$FreeBSD\$"\);\n\n/

Remove $FreeBSD$: two-line .h pattern

Remove /^\s*\*\n \*\s+\$FreeBSD\$$\n/

routed(8): Remove a double word in a source code comment

- s/it it/it/

MFC after: 3 days

sbin/routed: Remove unused code for sgi and NetBSD.

MFC after: 2 weeks

General further adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 3-Clause license.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

Special thanks to Wind River for providing access to "The Duke of
Highlander" tool: an older (2014) run over FreeBSD tree was useful as a
starting point.

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

routed(8): Avoid NULL de-reference and two possible memory leaks.

The reports and fixes are straightforward but it's nice to be able
to confirm against NetBSD.

CID: 271080, 272306, 272307
Obtained from: NetBSD (CVS ref. 1.21 - 1.23)
MFC after: 2 weeks.

routed(8): use NULL instead of zero for pointers.

Fix a style bug

Fix use of AND operator: should be bitwise instead of logical.

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.

Add some consts, remove some unused stuff and other attempts to calm
FlexeLint down.

Modernize prototypes (ie: no extern)

Make lots of stuff static.

Use <sys/queue.h> to manage the interface list.

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

Remove #ident directives, they don't exist on the vendor branch anymore.

Remove advertising clause from University of California Regent's license,
per letter dated July 22, 1999.

Approved by: core, imp

Virgin import of rhyolite.com routed v2.27

Add the possibility to use a no_rip_out configuration option in order
to stop routed from sending out RIP updates.

PR: 29090
Submitted by: Matthew Braithwaite <mab@red-bean.com>

o Move NTOHL() and associated macros into <sys/param.h>. These are
deprecated in favor of the POSIX-defined lowercase variants.
o Change all occurrences of NTOHL() and associated marcros in the
source tree to use the lowercase function variants.
o Add missing license bits to sparc64's <machine/endian.h>.
Approved by: jake
o Clean up <machine/endian.h> files.
o Remove unused __uint16_swap_uint32() from i386's <machine/endian.h>.
o Remove prototypes for non-existent bswapXX() functions.
o Include <machine/endian.h> in <arpa/inet.h> to define the
POSIX-required ntohl() family of functions.
o Do similar things to expose the ntohl() family in libstand, <netinet/in.h>,
and <sys/param.h>.
o Prepend underscores to the ntohl() family to help deal with
complexities associated with having MD (asm and inline) versions, and
having to prevent exposure of these functions in other headers that
happen to make use of endian-specific defines.
o Create weak aliases to the canonical function name to help deal with
third-party software forgetting to include an appropriate header.
o Remove some now unneeded pollution from <sys/types.h>.
o Add missing <arpa/inet.h> includes in userland.

Tested on: alpha, i386
Reviewed by: bde, jake, tmm

Import routed-2.21.

$Revision$ -> $FreeBSD$ (more cleanup needed here)

$Id$ -> $FreeBSD$

Latest-and-greatest routed.
Includes RIPv2 and Router Discovery.

Submitted by: Vernon Schryver <vjs@calcite.rhyolite.com>

Spelling, add rcsid, remove unused #includes.
Convert 1000000 usec to 1 sec 0 usec.
Use provided safe malloc (rtmalloc()) instead of malloc(): exit on allocation
failure.
Correct use of .Nm
Add usage() and use errx().

/usr/src/sbin/routed/parms.c and .../routed/rtquery/rtquery.c both
contain code that compare a char pointer with a char. As this
doesn't make much sense, it looks very much as if a '*' has been
dropped by mistake. I have made no analysis of the possible
consequences of the problem.

PR: 7319
Reviewed by: phk
Submitted by: Anders Thulin <Anders.X.Thulin@telia.se>

Problem whith "subnet=" statement in /etc/gateways.
routed discards the first character of the network address.
Example: "subnet=10.0.0.0/24,1"
The network address is interpreted as 0.0.0.0/24,1.
PR: 4825
Reviewed by: phk
Submitted by: Mike E. Matsnev <mike@azog.cs.msu.su>

New version of Vern's routed. This includes more byte-order fixes,
some MD5 fixes, better tracing, configurable redirect processing,
and a fix to split-horizon/poisoned-reverse treatment.

Submitted by: Vernon J. Schryver <vjs@mica.denver.sgi.com>

Latest version of SGI routed courtesy of Vern Schryver. This version
adds the capability to use MD5 authentication as defined in the latest
documents.

Submitted by: Vernon J. Schryver <vjs@mica.denver.sgi.com>

Virgin import of new BSD/SGI routed. This update contains a number
of important bug fixes.

Obtained from: Vernon J. Schryver <vjs@mica.denver.sgi.com>