docs/75610: Advanced Networking Wireless section cleanup

[David Adam]

>Number:         75610
>Category:       docs
>Synopsis:       Advanced Networking Wireless section cleanup
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-doc
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          change-request
>Submitter-Id:   current-users
>Arrival-Date:   Wed Dec 29 14:20:18 GMT 2004
>Closed-Date:
>Last-Modified:
>Originator:     David Adam
>Release:        FreeBSD-5.3
>Organization:
University Computer Club, UWA
>Environment:
CYGWIN_NT-5.1 owl 1.5.12(0.116/4/2) 2004-11-10 08:34 i686 unknown unknown Cygwin (hey, you don't need a BSD machine to do Docs!)
>Description:
Given the current focus on FreeBSD 5.3-RELEASE and above for the Handbook, I believe the attached change is in order. Also included is minor grammar cleanup (which - in my opinion - the entire Wireless section needs).

As I have no access to a FreeBSD 4.x machine and cannot find the PR that originated this sysctl change, I'm not sure whether or not my comments about 4.x are appropriate. Can someone confirm for me?
>How-To-Repeat:
-
>Fix:
(My first real diff, so here goes...)

--- chapter.sgml.orig	2004-12-29 21:37:24.623057600 +0800
+++ chapter.sgml	2004-12-29 21:55:09.994987200 +0800
@@ -808,15 +808,15 @@
           tell the FreeBSD kernel which interfaces to bridge together.
           We do that by using &man.sysctl.8;:</para>
 
-         <screen>&prompt.root; <userinput>sysctl net.link.ether.bridge=1</userinput>
-&prompt.root; <userinput>sysctl net.link.ether.bridge_cfg="wi0,xl0"</userinput>
+	<screen>&prompt.root; <userinput>sysctl net.link.ether.bridge.enable=1</userinput>
+&prompt.root; <userinput>sysctl net.link.ether.bridge.config="wi0,xl0"</userinput>
 &prompt.root; <userinput>sysctl net.inet.ip.forwarding=1</userinput></screen>
 
-	<para>On &os; 5.2-RELEASE and later, you have to use
-	  instead the following options:</para>
+	<para>On &os; versions earlier than 5.2-RELEASE (including releases in the 4.x line),
+	you need to use the following options instead:</para>
 
-	<screen>&prompt.root; <userinput>sysctl net.link.ether.bridge.enable=1</userinput>
-&prompt.root; <userinput>sysctl net.link.ether.bridge.config="wi0,xl0"</userinput>
+         <screen>&prompt.root; <userinput>sysctl net.link.ether.bridge=1</userinput>
+&prompt.root; <userinput>sysctl net.link.ether.bridge_cfg="wi0,xl0"</userinput>
 &prompt.root; <userinput>sysctl net.inet.ip.forwarding=1</userinput></screen>
 
          <para>Now it is time for the wireless card setup.

>Release-Note:
>Audit-Trail:
>Unformatted: