ppp: Enable support for EIM NAT

Enable support for endpoint-independent mapping ("full cone NAT") via
Libalias's UDP NAT.

Reviewed by: igoro, thj
Differential Revision: https://reviews.freebsd.

ppp: Enable support for EIM NAT

Enable support for endpoint-independent mapping ("full cone NAT") via
Libalias's UDP NAT.

Reviewed by: igoro, thj
Differential Revision: https://reviews.freebsd.org/D46689

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Remove $FreeBSD$: two-line .h pattern

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

spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD

The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of

spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD

The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of BSD-2-Clause.

Discussed with: pfg
MFC After: 3 days
Sponsored by: Netflix

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Merge ^/head r337646 through r338014.

Add the possibility to mark packets urgent based on their length.

This allows preferring small (e.g. ACK) packets, in upload heavy
environments.

It was already possible to mark packets urgent based

Add the possibility to mark packets urgent based on their length.

This allows preferring small (e.g. ACK) packets, in upload heavy
environments.

It was already possible to mark packets urgent based on destination
port. This option piggy backs on that feature.

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various: general adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error

various: general adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

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.

No functional change intended.

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MFH

Sponsored by: The FreeBSD Foundation

Use NULL instead of 0 for pointers.

getenv(3) returns NULL if the variable name is not in the current
environment.
getservent(3) returns NULL on EOF or error

MFC after: 4 weeks

Merge sync of head

Merge from HEAD

Merge ^/head r277844 through r277857.

Fix multiple instances of the following clang 3.6.0 warning in ppp:

usr.sbin/ppp/command.c:2054:74: error: address of array 'arg->bundle->radius.cfg.file'
will always evaluate to 'true' [-Werror,-Wp

Fix multiple instances of the following clang 3.6.0 warning in ppp:

usr.sbin/ppp/command.c:2054:74: error: address of array 'arg->bundle->radius.cfg.file'
will always evaluate to 'true' [-Werror,-Wpointer-bool-conversion]
if (arg->bundle->radius.alive.interval && !arg->bundle->radius.cfg.file) {
~~~~~~~~~~~~~~~~~~~~~~~~~^~~~

In all cases, the file field of struct radius is a char array, but the
intent was to check whether the string is empty, so add an indirection
to achieve that. Use a similar approach for the sockname field of
struct server.

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Merge from head

IFC @ r254014

IFC @253398

Merge fresh head.

- Correct mispellings of the word occurrence

Submitted by: Christoph Mallon <christoph.mallon@gmx.de> (via private mail)

IFC @230489 (pending review).

IFC to head to catch up the bhyve branch

Approved by: grehan@

Spelling fixes for usr.sbin/

Add "iface name" and "iface description" commands.

PR: 151400
Submitted by: Aragon Gouveia - aragon at phat dot za dot net with minor fixes
MFC after: 3 weeks

Update to the "new" libalias API (and thus fix world breakage).

Add a new option for ppp.conf: rad_port_id. It allows to
change the way of what ppp submits to the RADIUS server
as NAS-Port-Id. Possible options are: the PID of the process
owning the corresponding

Add a new option for ppp.conf: rad_port_id. It allows to
change the way of what ppp submits to the RADIUS server
as NAS-Port-Id. Possible options are: the PID of the process
owning the corresponding interface, tun(4) interface number,
interface index (as it would get returned by if_nametoindex(3)),
or it's possible to keep the default behavior. Check the ppp(8)
manual page for details.

PR: bin/112764
Submitted by: novel (myself)
Reviewed by: flz
Approved by: flz
MFC after: 1 month

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Remove __DATE__ so that compiling the same source produces the same binary
(for non-static binaries at least).

Use the correct length when copying trailing data!!

PR: 77104
Submitted by: Martin Birgmeier martin at email dot aon dot at
MFC after: 3 days