Copy stable/10@r272459 to releng/10.1 as part of
the 10.1-RELEASE process.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Add missing IEEE1394 support dropped during merge from NetBSD.

Nuke ascii2addr() and addr2ascii(). They have no consumers anywhere
in FreeBSD, and originated from INRIA IPv6.

Stub out netstat reference to addr2ascii() I mistakenly introduced.
Update misleading man page sections.

Merge NetBSD's getnameinfo() AF_LINK extensions for a portable way to
print link-layer addresses given a sockaddr_dl(), minus the IEEE 1394
bits which don't map directly to our code.

Obtained from: NetBSD (getnameinfo.c)
Discussed on: current (March 2006)

Return EAI_OVERFLOW instead of EAI_MEMORY when the supplied buffer is
too short. This conforms to RFC3493, POSIX and XPG6.

Obtained from: NetBSD

- Use ANSI C prototype.
- Remove trailing space.

fix signed/unsigned comparison warnings.

Obtained from: NetBSD

Wrong working directory, sorry. The previous patch was what I have
seen in NetBSD's tree, and this one is what I have submitted for review.

Pointy hat to: me

Remove a check about whether sa->sa_len is equal to salen from
getnameinfo(3). POSIX standard does not require a sa_len field
in sockaddr struct, hence such requirement will cause problem
for portability.

PR: standards/80008
Requested by: Xin Liu <lx@knight.6test.edu.cn>
Reviewed by: freebsd-standards (das)
MFC After: 2 weeks

Back out the `hiding' of strlcpy and strlcat. Several people
vocally objected to this safety belt.

`Hide' strlcpy and strlcat (using the namespace.h / __weak_reference
technique) so that we don't wind up calling into an application's
version if the application defines them.

Inspired by: qpopper's interfering and buggy version of strlcpy

- ntohs() returns unsigned value.
- use strlcpy.
- snprintf can return negative value, so cope with it.
- tweak interface index on interface locals (ff01::/16).
- removed unused macros.
- removed a macro that uses only once (in a trivial context).
- explicitly say goodbye to ENI_xxx.
- constify struct afd.

Obtained from: KAME
MFC after: 1 week

Make NI_WITHSCOPEID a default (always on), to synchronize
with recent 2553bis.

Obtained from: KAME
MFC after: 3 weeks

Fix the style of the SCM ID's.
I believe have made all of libc .c's as consistent as possible.

Remove multi-line __P() usage.

Remove __P() usage.

Correct 2nd argument of getnameinfo(3) to socklen_t.

Reviewed by: itojun

off-by-1 error in string length validation
From: Pavel Kankovsky <peak@argo.troja.mff.cuni.cz>

sync with latest kame.
- permit numeric scopeid, be more careful about buffer size

TODO: 2nd arg type should be socklen_t for RFC2553 conformance,
but due to include file dependency it is not a easy thing to do
(netdb.h does not have socklen_t)

Change IPv6 scoped addr format again based on recent standard discussion.
Sorry for the flapping, but no change will be done for 4.0 anymore.
Official standard will be published around April or later.
If different format would be adopted at that time, then support for
the new format will be added to the succeeding FreeBSD 4.x.

Approved by: jkh

IPv6 scoped addr format is changed as recent KAME change.

KAME scoped addr format is changed recently.
before: addr@scope
now: scope%addr

Because the end of IPv6 numeric addr is tend to be truncated in
`netstat -rn ` output, so placing scope part at starting of addr
will be convenient.

Approved by: jkh

Obtained from: KAME project

Allow reverse lookup for loopback addr.
This is merge from recent KAME fix to be more compliant with RFC2553.

Obtained from: KAME project

Getaddrinfo(), getnameinfo(), and etc support in libc/net.
Several udp and raw apps IPv6 support.

Reviewed by: freebsd-arch, cvs-committers
Obtained from: KAME project