Ticket #1663: lfs-svn-fix-ip-address-table.patch

chapter07/hosts.xml

@@ -34 +34 @@
   address is in the private network IP address range. Valid ranges
   are:</para>
 
-<screen><literal>       Class Networks
-        A     10.0.0.0
-        B     172.16.0.0 through 172.31.0.255
-        C     192.168.0.0 through 192.168.255.255</literal></screen>
+<screen><literal>       Class   First Network   Count   Last Network
+        A       10.0.0.0/8      1       10.0.0.0/8
+        B       172.16.0.0/16   16      172.31.0.0/16
+        C       192.168.0.0/24  256     192.168.255.0/24</literal></screen>
 
-  <para>A valid IP address could be 192.168.1.1. A valid FQDN for this
+  <para>This table uses CIDR notation. If you don't know how to
+  interpret CIDR network descriptions, then one good explanation
+  can be found on <ulink url="http://en.wikipedia.org/wiki/Classless_Inter-Domain_Routing">Wikipedia's
+  CIDR page</ulink>.  Others can no doubt be found at the end of
+  Google searches.</para>
+
+  <para>Note that there are 16 different possible /16 private networks,
+  and 256 possible /24 private networks. Each of these networks is
+  still conventionally a /16 or a /24 network, though; creating a
+  192.168.0.0/16 network, while possible, is not recommended. The
+  reason is that historically, addresses starting with 192 denoted
+  Class C networks.</para>
+
+  <para>A valid private IP address could be 192.168.1.1. A valid FQDN for this
   IP could be www.linuxfromscratch.org (not recommended because this is
   a valid registered domain address and could cause domain name server
   issues).</para>