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Message-ID: <4E8A5D74.7000507@gmail.com>
Date:	Mon, 03 Oct 2011 19:12:20 -0600
From:	Robert Hancock <hancockrwd@...il.com>
To:	Chris Friesen <chris.friesen@...band.com>
CC:	David Miller <davem@...emloft.net>, johnmusbach1@...il.com,
	linux-kernel@...r.kernel.org
Subject: Re: Handling of multiple DHCP OFFERs

On 10/03/2011 05:36 PM, Chris Friesen wrote:
> On 10/03/2011 05:21 PM, David Miller wrote:
>> From: John Musbach<johnmusbach1@...il.com>
>> 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.
>
> What about netbooting? Or are you expecting people to use initramfs with
> a userspace implementation?
>
> Chris
>

Normally with PXE boot it's the PXE ROM that initially gets the IP 
address. After the kernel boots up, userspace normally repeats the process.
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