Add support for multiple PPTP sessions:

- new API function: PacketAliasRedirectPptp()
- new mode bit: PKT_ALIAS_DENY_PPTP

Please see manual page for details.

A complete reformatting of manual page.

Correct Charles Mott's email address

Requested by: Charles Mott <cmott@scientech.com>

Allow PacketAliasSetTarget() to be passed the following:
INADDR_NONE: Incoming packets go to the alias address (the default)
INADDR_ANY: Incoming packets are not NAT'd (direct access to the

Allow PacketAliasSetTarget() to be passed the following:
INADDR_NONE: Incoming packets go to the alias address (the default)
INADDR_ANY: Incoming packets are not NAT'd (direct access to the
internal network from outside)
anything else: Incoming packets go to the specified address

Change a few inaddr::s_addr == 0 to inaddr::s_addr == INADDR_ANY
while I'm there.

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Remove single-space hard sentence breaks. These degrade the quality
of the typeset output, tend to make diffs harder to read and provide
bad examples for new-comers to mdoc.

-it do, among other things, clear out any
+it does, amongst other things, clear out any

The old sentance didn't seem to make sense.

Mention what PKT_ALIAS_PROXY_ONLY does.

Prompted by: archie

Fix several typos.

Submitted by: Erik Salander <erik@whistle.com>

Restore sub-chapters order.

PR: docs/14766
Submitted by: Kazutoshi Kubota <kazu@iworks.co.jp>

Fix typo.

$Id$ -> $FreeBSD$

Typo: 102 => 192 (PR: docs/13310 - Maxim Sobolev <sobomax@altavista.net>)

Various man page cleanup:

- Sort xrefs
- FreeBSD.ORG -> FreeBSD.org
- Be consistent with section names as outlines in mdoc(7)
- Other misc mdoc cleanup.

PR: doc/13144
Submitted by: Alexy M. Zelkin

Various man page cleanup:

- Sort xrefs
- FreeBSD.ORG -> FreeBSD.org
- Be consistent with section names as outlines in mdoc(7)
- Other misc mdoc cleanup.

PR: doc/13144
Submitted by: Alexy M. Zelkin <phantom@cris.net>

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Don't get caught in an infinite recursion when PKT_ALIAS_REVERSE
is set.
Document PKT_ALIAS_REVERSE.

Pointed out by: Jonathan Hanna <jh@cr1003333-a.crdva1.bc.home.com>
PR: 12304

Add missing ``.''.

PacketAliasProxyRule takes a const char *
Reminded by: bde

Document PacketAliasPptp() and allow it to be disabled
by passing INADDR_NONE.

Mention that PacketAliasProxyRule() doesn't accept host names,
just IP numbers.

Document PacketAliasProxyRule() and fix a typo.

Fix a couple of typos.

Spelling corrections.

PR: 6868
Submitted by: Josh Gilliam <josh@quick.net>

FixedSpellingErrorInAFunctionname.

Fixed a missing #include in the synopsis.
Fixed some wrong prototypes.
Fixed a misspelled function name.

The owner of this file should add a copyright and an Id.

Teach libalias to work with IPFW firewalls (controlled by a flag).

Obtained from: Yes development tree (+ 10 lines of patches from
Charles Mott, original libalias author)

Upgrade to 2.4 (Fix -PKT_ALIAS_UNREGISTERED_ONLY)
Submitted by: Charles Mott <cmott@srv.net>

Add __libalias_version so that ppp can derive the
correct library name for dlopen()