[ipxe-devel] Filename Option Precedence

H. Peter Anvin hpa at zytor.com
Sat Oct 6 05:32:01 UTC 2012

On 10/02/2012 03:39 PM, Michael Brown wrote:
> On Tuesday 02 Oct 2012 08:48:44 Shao Miller wrote:
>> I remember that there's been lots of discussion about this kind of thing in
>> the past, including Simon Kelly for dnsmasq, but I don't quite recall if
>> this particular precedence for the filename option is intentional or not.
>> If we're not going to use the option from the ProxyDHCP server, why do we
>> bother asking it? :)
> The behaviour is by design; the PXE specification (section 2.4.1) explicitly
> states that DHCP takes precendence over ProxyDHCP as a source of options.
> It's annoying that Intel doesn't conform to this!

Realistically, I would say in practice the Intel stack probably takes 
precedence over what the written spec says.  The written spec is in such 
bad shape, and most implementations are based on the Intel stack.


H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.

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