From owner-freebsd-doc Thu Dec 19 12:10:58 2002 Delivered-To: freebsd-doc@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id E9C9E37B401; Thu, 19 Dec 2002 12:10:56 -0800 (PST) Received: from pittgoth.com (14.zlnp1.xdsl.nauticom.net [209.195.149.111]) by mx1.FreeBSD.org (Postfix) with ESMTP id 492B843E4A; Thu, 19 Dec 2002 12:10:56 -0800 (PST) (envelope-from trhodes@FreeBSD.org) Received: from moble.pittgoth.com (acs-24-154-229-196.zoominternet.net [24.154.229.196]) by pittgoth.com (8.12.6/8.12.6) with SMTP id gBJKAsNN044361; Thu, 19 Dec 2002 15:10:55 -0500 (EST) (envelope-from trhodes@FreeBSD.org) Date: Thu, 19 Dec 2002 15:11:21 -0500 From: Tom Rhodes To: Marc Fonvieille Cc: freebsd-doc@FreeBSD.org Subject: Re: FreeBSD Handbook Message-Id: <20021219151121.20e5803e.trhodes@FreeBSD.org> In-Reply-To: <20021219195435.GA540@nosferatu.blackend.org> References: <3E01FA5E.87B6FC46@mitre.org> <20021219195435.GA540@nosferatu.blackend.org> X-Mailer: Sylpheed version 0.8.6claws (GTK+ 1.2.10; i386-portbld-freebsd4.7) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-doc@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org On Thu, 19 Dec 2002 20:54:35 +0100 Marc Fonvieille wrote: > According to RFCs (rfc1918 for example), the Handbook is correct: > > The Internet Assigned Numbers Authority (IANA) has reserved the > following three blocks of the IP address space for private > internets: > > 10.0.0.0 - 10.255.255.255 (10/8 prefix) > 172.16.0.0 - 172.31.255.255 (172.16/12 prefix) > 192.168.0.0 - 192.168.255.255 (192.168/16 prefix) > > We will refer to the first block as "24-bit block", the second as > "20-bit block", and to the third as "16-bit" block. Note that (in > pre-CIDR notation) the first block is nothing but a single class A > network number, while the second block is a set of 16 contiguous > class B network numbers, and third block is a set of 256 contiguous > class C network numbers. > > The Handbook says "Class C block" not "Class C network", so it's Ok. > > Marc > For 10 daemon points, can anyone remember what CIDR is (and stands for) without looking at any RFC's or books? -- Tom Rhodes Who remembers an argument about CIDR several years ago where he quoted the RFC's to prove his point... What number he never remembers ;) To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-doc" in the body of the message