From owner-freebsd-doc@FreeBSD.ORG  Fri Mar 13 01:11:30 2015
Return-Path: <owner-freebsd-doc@FreeBSD.ORG>
Delivered-To: freebsd-doc@FreeBSD.org
Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115])
 (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by hub.freebsd.org (Postfix) with ESMTPS id EEC1E5AD
 for <freebsd-doc@FreeBSD.org>; Fri, 13 Mar 2015 01:11:30 +0000 (UTC)
Received: from cefaq.ru (cefaq.ru [37.143.12.233])
 (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (Client did not present a certificate)
 by mx1.freebsd.org (Postfix) with ESMTPS id AC6BCC01
 for <freebsd-doc@FreeBSD.org>; Fri, 13 Mar 2015 01:11:29 +0000 (UTC)
Received: from [192.168.3.2] (ppp91-76-190-132.pppoe.mtu-net.ru
 [91.76.190.132]) by cefaq.ru (ESMTP) with ESMTPSA id 3D0181280110
 for <freebsd-doc@FreeBSD.org>; Fri, 13 Mar 2015 04:03:02 +0300 (MSK)
Message-ID: <55023744.5020800@leha.info>
Date: Fri, 13 Mar 2015 04:03:00 +0300
From: =?UTF-8?B?0JDQu9C10LrRgdC10Lkg0J/RgNCw0YY=?= <mail@leha.info>
Reply-To: mail@leha.info
User-Agent: Mozilla/5.0 (X11; Linux x86_64;
 rv:31.0) Gecko/20100101 Thunderbird/31.5.0
MIME-Version: 1.0
To: freebsd-doc@FreeBSD.org
Subject: there is a mistake in ipfw docs on your site
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Transfer-Encoding: 7bit
X-BeenThere: freebsd-doc@freebsd.org
X-Mailman-Version: 2.1.18-1
Precedence: list
List-Id: Documentation project <freebsd-doc.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-doc>,
 <mailto:freebsd-doc-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-doc/>
List-Post: <mailto:freebsd-doc@freebsd.org>
List-Help: <mailto:freebsd-doc-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-doc>,
 <mailto:freebsd-doc-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Fri, 13 Mar 2015 01:11:31 -0000

hello
talking about this page: 
https://www.freebsd.org/doc/en/books/handbook/firewalls-ipfw.html
there's RFC (http://www.rfc-editor.org/rfc/rfc5735.txt), which says:

4.  Summary Table

Address Block       Present Use                Reference
------------------------------------------------------------------
0.0.0.0/8           "This" Network             RFC 1122, Section 3.2.1.3
10.0.0.0/8          Private-Use Networks       RFC 1918
127.0.0.0/8         Loopback                   RFC 1122, Section 3.2.1.3
169.254.0.0/16      Link Local                 RFC 3927
172.16.0.0/12       Private-Use Networks       RFC 1918
192.0.0.0/24        IETF Protocol Assignments  RFC 5736
192.0.2.0/24        TEST-NET-1                 RFC 5737
192.88.99.0/24      6to4 Relay Anycast         RFC 3068
192.168.0.0/16      Private-Use Networks       RFC 1918
198.18.0.0/15       Network Interconnect
                     Device Benchmark Testing   RFC 2544
198.51.100.0/24     TEST-NET-2                 RFC 5737
203.0.113.0/24      TEST-NET-3                 RFC 5737
224.0.0.0/4         Multicast                  RFC 3171
240.0.0.0/4         Reserved for Future Use    RFC 1112, Section 4
255.255.255.255/32  Limited Broadcast          RFC 919, Section 7
                                                RFC 922, Section 7
-------------

BUT
your page says:

$cmd 00307 deny all from 204.152.64.0/23 to any in via $pif    #Sun cluster interconnect
$cmd 00308 deny all from 224.0.0.0/3 to any in via $pif        #Class D & E multicast

there's no 204.152.64.0 in RFC and there's mask /4 not /3

please tell me what i don't understand?