From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751858Ab1JCXVe (ORCPT ); Mon, 3 Oct 2011 19:21:34 -0400 Received: from shards.monkeyblade.net ([198.137.202.13]:57081 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751512Ab1JCXVc (ORCPT ); Mon, 3 Oct 2011 19:21:32 -0400 Date: Mon, 03 Oct 2011 19:21:29 -0400 (EDT) Message-Id: <20111003.192129.745977451712127515.davem@davemloft.net> To: johnmusbach1@gmail.com Cc: linux-kernel@vger.kernel.org Subject: Re: Handling of multiple DHCP OFFERs From: David Miller In-Reply-To: References: X-Mailer: Mew version 6.3 on Emacs 23.2 / Mule 6.0 (HANACHIRUSATO) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.2.6 (shards.monkeyblade.net [198.137.202.13]); Mon, 03 Oct 2011 16:21:30 -0700 (PDT) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: John Musbach Date: Mon, 3 Oct 2011 23:18:06 +0000 (UTC) > Hello, I am configuring a network that'll have multiple DHCP servers > and I was wondering how Linux handles receiving multiple DHCP OFFERs? > More specifically, how does it choose which one to prefer and how long > will it wait for a answer from a preferred server if the other server > answers first? Thanks. There are multiple userspace implementations of DHCP, and the kernel does not usually get involved at all. You'll therefore have to ask the folks who write and maintain the various DHCP implementations.