svn commit: r42592 - head/en_US.ISO8859-1/books/handbook/advanced-networking
Brad Davis
brd at FreeBSD.org
Tue Aug 27 14:55:39 UTC 2013
Author: brd
Date: Tue Aug 27 14:55:38 2013
New Revision: 42592
URL: http://svnweb.freebsd.org/changeset/doc/42592
Log:
- More IPv6 cleanup
- Place more emphasis on running out of IPv4 addresses and cite IANA running out of IPv4 addresses.
Reviewed by: gavin@
Modified:
head/en_US.ISO8859-1/books/handbook/advanced-networking/chapter.xml
Modified: head/en_US.ISO8859-1/books/handbook/advanced-networking/chapter.xml
==============================================================================
--- head/en_US.ISO8859-1/books/handbook/advanced-networking/chapter.xml Tue Aug 27 14:01:43 2013 (r42591)
+++ head/en_US.ISO8859-1/books/handbook/advanced-networking/chapter.xml Tue Aug 27 14:55:38 2013 (r42592)
@@ -5021,17 +5021,25 @@ redirect_port tcp 192.168.0.3:80 80</pro
<itemizedlist>
<listitem>
- <para>Running out of addresses. Today this is not so much of
- a concern, since RFC1918 private address space (<hostid
- role="ipaddr">10.0.0.0/8</hostid>, <hostid
- role="ipaddr">172.16.0.0/12</hostid>, and <hostid
- role="ipaddr">192.168.0.0/16</hostid>) and
- <acronym>NAT</acronym> are being employed.</para>
+ <para>Running out of addresses. For years the use of RFC1918
+ private address space
+ (<hostid role="ipaddr">10.0.0.0/8</hostid>,
+ <hostid role="ipaddr">172.16.0.0/12</hostid>, and
+ <hostid role="ipaddr">192.168.0.0/16</hostid>) and NAT has
+ slowed down the exhaustion. Even though, there are very few
+ remaining IPv4 addresses. The Internet Assigned Numbers
+ Authority (<acronym>IANA</acronym>) has issued the last of
+ the available major blocks to the Regional Registries.
+ Once each Region Registry runs out, there will be no more
+ available and switching to <acronym>IPv6</acronym> will be
+ critical.</para>
</listitem>
<listitem>
- <para>Router table entries were getting too large. This is
- still a concern today.</para>
+ <para>Every block of IPv4 addresses allocated required routing
+ information to be exchanged between many routers on the
+ Internet, and these routing tables were getting too large to
+ allow efficient routing.</para>
</listitem>
</itemizedlist>
@@ -5054,7 +5062,7 @@ redirect_port tcp 192.168.0.3:80 80</pro
</listitem>
</itemizedlist>
- <para>There are other useful features of
+ <para>There are many other useful features of
<acronym>IPv6</acronym>:</para>
<itemizedlist>
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