From owner-freebsd-net@FreeBSD.ORG Thu Jul 15 20:07:12 2004 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 59ABF16A4CE; Thu, 15 Jul 2004 20:07:12 +0000 (GMT) Received: from pit.databus.com (p70-227.acedsl.com [66.114.70.227]) by mx1.FreeBSD.org (Postfix) with ESMTP id EAD8543D3F; Thu, 15 Jul 2004 20:07:11 +0000 (GMT) (envelope-from barney@pit.databus.com) Received: from pit.databus.com (localhost [127.0.0.1]) by pit.databus.com (8.12.11/8.12.11) with ESMTP id i6FK7AGY090949; Thu, 15 Jul 2004 16:07:10 -0400 (EDT) (envelope-from barney@pit.databus.com) Received: (from barney@localhost) by pit.databus.com (8.12.11/8.12.11/Submit) id i6FK7AQl090948; Thu, 15 Jul 2004 16:07:10 -0400 (EDT) (envelope-from barney) Date: Thu, 15 Jul 2004 16:07:10 -0400 From: Barney Wolff To: Gleb Smirnoff , Gary Corcoran , freebsd-net@freebsd.org Message-ID: <20040715200710.GA90594@pit.databus.com> References: <40F5C880.3090206@comcast.net> <20040715085219.GA17358@cell.sick.ru> <40F6A878.9090407@comcast.net> <20040715192837.GB21326@cell.sick.ru> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20040715192837.GB21326@cell.sick.ru> User-Agent: Mutt/1.5.6i X-Scanned-By: MIMEDefang 2.43 Subject: Re: DHCP server over PPPoE server X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 15 Jul 2004 20:07:12 -0000 On Thu, Jul 15, 2004 at 11:28:37PM +0400, Gleb Smirnoff wrote: > On Thu, Jul 15, 2004 at 11:53:28AM -0400, Gary Corcoran wrote: > G> My research indicates that rather than doing the usual DHCP DISCOVER to > G> start things off, I should be able to send a DHCP INFORM message, > G> which includes my already-assigned IP address. The DHCP server should > G> see this, it then MUST NOT (according to the RFC) lookup the address > G> in its lease database, but it then should respond, sending the all the > G> configuration parameters *except* an IP address, back to the IP address > G> that was included in the message. > G> > G> Thus my desire to get dhcpd running with mpd pppoe... > G> Any suggestions? > > Well if you even make your DHCP server send packets to already > configured IP address, I'm afraid the client side will just ignore them. DHCP is not restricted to broadcast networks. In fact, the ietf-ppp(ext) working group is quite adamant that DHCP be used to get configuration data rather than adding new attributes to LCP/IPCP. -- Barney Wolff http://www.databus.com/bwresume.pdf I'm available by contract or FT, in the NYC metro area or via the 'Net.