From owner-freebsd-net@FreeBSD.ORG Tue Apr 1 17:22:20 2014 Return-Path: Delivered-To: net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 5498724F for ; Tue, 1 Apr 2014 17:22:20 +0000 (UTC) Received: from mail-ig0-x22a.google.com (mail-ig0-x22a.google.com [IPv6:2607:f8b0:4001:c05::22a]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 207AE1B4 for ; Tue, 1 Apr 2014 17:22:20 +0000 (UTC) Received: by mail-ig0-f170.google.com with SMTP id uq10so4856694igb.3 for ; Tue, 01 Apr 2014 10:22:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:date:message-id:subject :from:to:cc:content-type; bh=b12urGDlgcCGIcOIz6syj3pfexGU+PG5hA0ZKlcMo0Y=; b=gCGuk5r53qom1U7oo1FksWMVkQZBQlUfPtYML4DlY8jtAooX+IJRmTTHAYpFJ/Mv6l lykCEPLxN1+Ri8JO9xeFWB6loHIj5sga/5vCLb3RBJMyHiFM4VButCl+ZqgN5UtPD82r 3Cbbk5zOHaRGtL0jNlUSg0RN8MPVY8BPc5POyod6itLYoN7wyojwqvGYwqjwQc4gJpdK 0SSHrna52nLB74yl3kuKPsiwvyZWxD63XPSjBVU0aqM6lKB877zSDIXoIfpRnKqTK/p1 XMzOgfH7qYyR36bBOkhWrcx6oY62d9GqF1mtSp4LVXgy2MiXEdTS62F8gwn42PRO4rfG CzTQ== MIME-Version: 1.0 X-Received: by 10.42.139.136 with SMTP id g8mr1680922icu.96.1396372938967; Tue, 01 Apr 2014 10:22:18 -0700 (PDT) Sender: vrwmiller@gmail.com Received: by 10.64.235.212 with HTTP; Tue, 1 Apr 2014 10:22:18 -0700 (PDT) In-Reply-To: <628086E4-3832-4221-B33E-9AC9234F3076@tamu.edu> References: <5339D0A0.1030903@rcn.com> <628086E4-3832-4221-B33E-9AC9234F3076@tamu.edu> Date: Tue, 1 Apr 2014 13:22:18 -0400 X-Google-Sender-Auth: 4_lhz6lMzXnjzpPKefxYqxu8GF8 Message-ID: Subject: Re: questions about (system) dhclient From: Rick Miller To: Dave Duchscher Content-Type: text/plain; charset=ISO-8859-1 X-Content-Filtered-By: Mailman/MimeDel 2.1.17 Cc: Robert Huff , net@freebsd.org X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.17 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 01 Apr 2014 17:22:20 -0000 On Tue, Apr 1, 2014 at 10:46 AM, Dave Duchscher wrote: > On Apr 1, 2014, at 7:48 AM, Rick Miller wrote: > > > > > > The conversation between a DHCP server and client consists of the initial > > DHCP DISCOVER request from the client broadcasted to the network to > which a > > DHCP ACK is expected in reply from an available DHCP server. Upon > receipt > > of DHCP ACK, the client sends another DHCP DISCOVER to the server asking > > for configuration information necessary to initialize networking. The > > server's response is a DHCP OFFER containing all the information > requested > > by the client. > > > > I illustrate this in a sequence diagram describing a PXE workflow for > > FreeBSD installation at > > http://hostileadmin.com/images/FreeBSD_PXE_Install_Workflow.gif. The > first > > four steps in the sequence is the workflow's first DHCP conversation. > > > The description of the DHCP packet flow is incorrect. DHCP packet flow > is the following for clients requesting a new lease. Diagram below > copied from RFC 2131. For clients renewing a lease, only the REQUEST and > ACK steps are done. > Thanks, Dave...I did mix up the terminology. -- Take care Rick Miller