Patches for BOOTP/DHCP code to support Windows Server DHCP

John Howie john at
Sun Jun 1 13:01:51 UTC 2014

Hi Steinar,

I could ask you to 'prove it', too, but I can easily check when I get back from my current travels :-)

It important to note that even if it does (as I think it does) it is NOT in violation of the RFC. The RFC simply says that if a client wants something it should ask for it, and not that a server cannot send the options unsolicited.

Best regards,


Sent from my iPhone

On Jun 1, 2014, at 19:30, "sthaug at" <sthaug at> wrote:

>> In short, no, I have no packet traces. Given that the DHCP code in the
>> FreeBSD boot loader and NFS subsystem does not request those options, but
>> that ISC-DHCP does provide them, I will go out on a limb and say that it
>> must be serving them without being asked if they are configured.
> In that case I'm afraid I must stand by my claim that you're wrong
> and ISC DHCP does *not* provide configured options unless the client
> asks for them.
> (And I have copious amounts of packet sniffer traces to prove this.)
> Not that this is particularly relevant to FreeBSD any more...
> Steinar Haug, Nethelp consulting, sthaug at

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