From owner-freebsd-questions Fri Jul 30 8:20:35 1999 Delivered-To: freebsd-questions@freebsd.org Received: from doc.dcoder.com (doc.dcoder.com [168.143.224.52]) by hub.freebsd.org (Postfix) with ESMTP id B56BA14BE4 for ; Fri, 30 Jul 1999 08:20:31 -0700 (PDT) (envelope-from dacoder@dcoder.com) Received: from doc.dcoder.com (doc.dcoder.com [168.143.224.52]) by doc.dcoder.com (8.9.3/8.9.3) with ESMTP id LAA41782; Fri, 30 Jul 1999 11:20:21 -0400 (EDT) (envelope-from dacoder@dcoder.com) Date: Fri, 30 Jul 1999 11:20:21 -0400 (EDT) From: David Coder Reply-To: David Coder To: Summoner Cc: questions@FreeBSD.ORG Subject: Re: 172.16.0.0 private net question In-Reply-To: <37A10A17.B3EA8C04@uswest.net> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Thu, 29 Jul 1999, Summoner wrote: > This isn't entirely FreeBSD related but I figure this would be one of > the few good places to ask. > > Is the 172.16.0.0 private network range 172.16.0.0 to 172.31.255.255, > or 172.0.0.0 to 172.16.255.255? The netmask is 255.240.0.0, a 12-bit > mask. So it makes sense, mathematically, to me, at least, that the IP > range would be 172.0 to 172.16. You're assuming that there can be but one subnet per netmask. The netmask There are 16 subnets in 172.0.0.0 to 172.255.255.255 that have netmask 255.240.0.0. The netmask determines how many bits of the address are allocated to determinining the network address: it does not determine the values of those bits. dc _____________________ David Coder SysAdmin WebHosting Verio.com 703-749-7955 x1314 > .................................. But RFC1918 says it's 172.16 to > 172.31. Does the 172.16 net just have the 12th bit always on or > something? > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-questions" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message