Without Option 50 in DHCPDICSCOVER

DavidWang@UoGuelph uoguelph at gmail.com
Wed Aug 8 18:38:50 UTC 2007

Thanks David. I must been missed some parts of the RFCs.
On 8/1/07, David W. Hankins <David_Hankins at isc.org> wrote:
> On Wed, Aug 01, 2007 at 01:40:32PM -0400, DavidWang at UoGuelph wrote:
> > Good day, I have seen multiple cases that Windows XP/Vista machines
> sending
> > out DHCP DISCOVER packet without Option 50. Does this normal? Is there
> any
> > way to change client side's behavior? (like changing some registry keys)
> This is normal.  Any DHCP client will omit the dhcp-requested-address
> in a DHCPDISCOVER if the lease has expired and been removed from its
> cache, or has been invalidated (as from a DHCPNAK).
> The dhcp-requested-address option is somewhat confusingly, but
> normally, included and omitted at different stages of a client's
> lifecycle.
> --
> Ash bugud-gul durbatuluk agh burzum-ishi krimpatul.
> Why settle for the lesser evil?  https://secure.isc.org/store/t-shirt/
> --
> David W. Hankins        "If you don't do it right the first time,
> Software Engineer                    you'll just have to do it again."
> Internet Systems Consortium, Inc.               -- Jack T. Hankins

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