No client hardware address?
David W. Hankins
David_Hankins at isc.org
Mon Oct 29 15:47:12 UTC 2007
On Mon, Oct 29, 2007 at 01:47:54PM +0100, Shane Kerr wrote:
> Ashley M. Kirchner wrote:
> > So, can anyone think of why the machine would quit sending it's
> > hardware address? A reboot will fix the problem ... every time. Only
> > to re-appear again when the lease expires hours later...
>
> This is actually kind of weird. Clients send DHCPINFORM when they have an IP
> address configured elsewhere (like a static address, or something else). So the
> client should be sending DHCPREQUEST, not DHCPINFORM.
>
> Looks like a bug in the client.
It's different software. I bet it's something using .Net's interface
to DHCP. We've seen this before from Flash Media Proxy Autodetection.
Sending a zero-length chaddr on a DHCPINFORM is incompliant with
RFC2131. This doesn't seem to stop them from doing it, and doing so
appears to be interoperable with other DHCP servers.
--
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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