sys: Remove $FreeBSD$: two-line nroff pattern

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

libalias: Remove unused function LibAliasCheckNewLink

The functionality to detect a newly created link after processing a
single packet is decoupled from the packet processing. Every new
packet is

libalias: Remove unused function LibAliasCheckNewLink

The functionality to detect a newly created link after processing a
single packet is decoupled from the packet processing. Every new
packet is processed asynchronously and will reset the indicator, hence
the function is unusable. I made a Google search for third party code,
which uses the function, and failed to find one.

That's why the function should be removed: It unusable and unused.
A much simplified API/ABI will remain in anything below 14.

Discussed with: kp
Reviewed by: manpages (bcr)
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D30275

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libalias: Fix -Wcast-align compiler warnings

This fixes -Wcast-align warnings caused by the underaligned `struct ip`.
This also silences them in the public functions by changing the function
signatu

libalias: Fix -Wcast-align compiler warnings

This fixes -Wcast-align warnings caused by the underaligned `struct ip`.
This also silences them in the public functions by changing the function
signature from char * to void *. This is source and binary compatible and
avoids the -Wcast-align warning.

Reviewed By: ae, gbe (manpages)
Differential Revision: https://reviews.freebsd.org/D27882

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libalias: retire cuseeme support

The CU-SeeMe videoconferencing client and associated protocol is at this
point a historical artifact; there is no need to retain support for this
protocol today.

Re

libalias: retire cuseeme support

The CU-SeeMe videoconferencing client and associated protocol is at this
point a historical artifact; there is no need to retain support for this
protocol today.

Reviewed by: philip, markj, allanjude
Relnotes: Yes
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D24790

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Add support for RFC 6598/Carrier Grade NAT subnets. to libalias and ipfw.

In libalias, a new flag PKT_ALIAS_UNREGISTERED_RFC6598 is added.
This is like PKT_ALIAS_UNREGISTERED_ONLY, but also is RFC

Add support for RFC 6598/Carrier Grade NAT subnets. to libalias and ipfw.

In libalias, a new flag PKT_ALIAS_UNREGISTERED_RFC6598 is added.
This is like PKT_ALIAS_UNREGISTERED_ONLY, but also is RFC 6598 aware.
Also, we add a new NAT option to ipfw called unreg_cgn, which is like
unreg_only, but also is RFC 6598-aware. The reason for the new
flags/options is to avoid breaking existing networks, especially those
which rely on RFC 6598 as an external address.

Submitted by: Neel Chauhan <neel AT neelc DOT org>
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D22877

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sys/net*: minor spelling fixes.

No functional change.

mdoc: fix rendering issues

Cleanup alias module handler register/unregister.

- Remove locking, since all module(9) events are running under &Giant.
- Use TAILQ for protocol handlers and fix a bug which led to
infinite cycle

Cleanup alias module handler register/unregister.

- Remove locking, since all module(9) events are running under &Giant.
- Use TAILQ for protocol handlers and fix a bug which led to
infinite cycle. Bug found in VirtualBox [1]
- Simplify code everywhere.
- Fix documentation.

[1] https://www.virtualbox.org/pipermail/vbox-dev/2013-November/011936.html

PR: 183792 [1]
Submitted by: Valery Ushakov <uwe NetBSD.org> [1]
Sponsored by: Nginx, Inc.

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- Move AUTHORS and ACKNOWLEDGEMENTS to the end of the page.
- Add myself to list of authors.

mdoc: avoid nested displays. Fixes mandoc warnings.

Fix style nit: don't use leading zero for dates in .Dd

Prompted by: brueffer
Approved by: brueffer
MFC after: 3 days

General mdoc(7) and typo fixes.

PR: 167734
Submitted by: Nobuyuki Koganemaru (kogane!jp.freebsd.org)
MFC after: 3 days

- General grammar and mdoc(7) fixes. [1] [2]
- While here, remove a paragraph about userspace operation that
has been outdated for some time. [2]

PR: 158623
Submitted by: Ben Kudak (kaduk % mit!e

- General grammar and mdoc(7) fixes. [1] [2]
- While here, remove a paragraph about userspace operation that
has been outdated for some time. [2]

PR: 158623
Submitted by: Ben Kudak (kaduk % mit!edu) [1]
Reviewed by: glebius [2]
MFC after: 1 week

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Export AddLink() function from libalias. It can be used when custom
alias address needs to be specified.
Add inbound handler to the alias_ftp module. It helps handle active
FTP transfer mode for the

Export AddLink() function from libalias. It can be used when custom
alias address needs to be specified.
Add inbound handler to the alias_ftp module. It helps handle active
FTP transfer mode for the case with external clients and FTP server behind
NAT. Fix passive FTP transfer case for server behind NAT using redirect with
external IP address different from NAT ip address.

PR: kern/157957
Submitted by: Alexander V. Chernikov

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Document PKT_ALIAS_SKIP_GLOBAL option.

Submitted by: Alexander V. Chernikov

mdoc: drop even more redundant .Pp calls

No change in rendered output, less mandoc lint warnings.

Tool provided by: Nobuyuki Koganemaru n-kogane at syd.odn.ne.jp

Merge the rest of my changes.

Various mdoc and grammar fixes.

Approved by: glebius
Reviewed by: glebius, ru

Summer of Code 2005: improve libalias - part 1 of 2

With the first part of my previous Summer of Code work, we get:

-made libalias modular:

-support for 'particular' protocols (like ftp/irc/etcet

Summer of Code 2005: improve libalias - part 1 of 2

With the first part of my previous Summer of Code work, we get:

-made libalias modular:

-support for 'particular' protocols (like ftp/irc/etcetc) is no more
hardcoded inside libalias, but it's available through external
modules loadable at runtime

-modules are available both in kernel (/boot/kernel/alias_*.ko) and
user land (/lib/libalias_*)

-protocols/applications modularized are: cuseeme, ftp, irc, nbt, pptp,
skinny and smedia

-added logging support for kernel side

-cleanup

After a buildworld, do a 'mergemaster -i' to install the file libalias.conf
in /etc or manually copy it.

During startup (and after every HUP signal) user land applications running
the new libalias will try to read a file in /etc called libalias.conf:
that file contains the list of modules to load.

User land applications affected by this commit are ppp and natd:
if libalias.conf is present in /etc you won't notice any difference.

The only kernel land bit affected by this commit is ng_nat:
if you are using ng_nat, and it doesn't correctly handle
ftp/irc/etcetc sessions anymore, remember to kldload
the correspondent module (i.e. kldload alias_ftp).

General information and details about the inner working are available
in the libalias man page under the section 'MODULAR ARCHITECTURE
(AND ipfw(4) SUPPORT)'.

NOTA BENE: this commit affects _ONLY_ libalias, ipfw in-kernel nat
support will be part of the next libalias-related commit.

Approved by: glebius
Reviewed by: glebius, ru

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o Kill BUGS section as it is not valid since rev. 1.4 alias_pptp.c.

Spotted by: ru.unix.bsd activists
MFC after: 1 week

Fix prototype.

Sort sections.

Mechanically kill hard sentence breaks.

Bumped document date.
Fixed markup.
Fixed examples to match the new API.

Mostly mechanical rework of libalias:

Makes it possible to have multiple packet aliasing instances in a
single process by moving all static and global variables into an
instance structure called "st

Mostly mechanical rework of libalias:

Makes it possible to have multiple packet aliasing instances in a
single process by moving all static and global variables into an
instance structure called "struct libalias".

Redefine a new API based on s/PacketAlias/LibAlias/g

Add new "instance" argument to all functions in the new API.

Implement old API in terms of the new API.

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