Problem with custom variable in bootfile-name

[Bob Harold]

On Wed, Jun 24, 2015 at 3:11 AM, Peter Rathlev <peter at rathlev.dk> wrote:

> On Tue, 2015-06-23 at 21:43 +0100, Niall O'Reilly wrote:
> > On Tue, 23 Jun 2015 13:43:38 +0100, Bob Harold wrote:
> > > The DHCP server only sends the options that the client asks for.
> >
> > ISTR over-riding the 'dhcp-parameter-request-list' option on the
> > server, and thereby forcing delivery of options not actually
> > requested by the client.
>
> Yes, that's an option:
>
> https://lists.isc.org/pipermail/dhcp-users/2013-September/017193.html
>
>   class "msft-wpad" {
>     match if substring(option vendor-class-identifier, 0, 4) = "MSFT";
>     option dhcp-parameter-request-list = concat(option
> dhcp-parameter-request-list, fc);
>   }
>
> This sends option 252 (0xfc) to Windows client, preventing them from
> spamming with INFORMS later.
>
> --
> Peter


I would have expected a client to ask for all the options that it
understands, and to ignore any option it did not request.  Am I missing
something?
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