Re: Handling of multiple DHCP OFFERs

From: Chris Friesen
Date: Mon Oct 03 2011 - 19:39:33 EST

On 10/03/2011 05:21 PM, David Miller wrote:
From: John Musbach<johnmusbach1@xxxxxxxxx>
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 Friesen
Software Developer
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