Andre Schubert andre at km3.de
Fri May 8 08:37:50 UTC 2009

Hi Daniel,

On Fri, 8 May 2009 10:31:55 +0200
Daniel Manser <me at danielmanser.com> wrote:

> Walter,
> I have enabled Leasequery on DHCPD 4.1.0 as well, but I enabled it
> globally, not just in a specific subnet. Maybe try this, it works
> pretty fine here.
> Our DHCP server is also used in a DOCSIS environment. In case your
> CMTS does not receive leasequery answers, please check that the CMTS
> sends a DHCP packet with message type 10 (a leasequery request). I've
> had the problem that our CMTS sent out leasequery requests with a
> message type 9, which would be a forcerenew packet according to the
> respective RFCs. The DHCP server however did not understand that and
> dropped it (which is correct behaviour).
> Better check that with a network sniffer, it can save you *a lot* of work.

What type of CMTS are you working on? Cisco?
I have also seen such things with Cisco CMTSes, but i do not know how
to change the message type on the Cisco CMTSes.


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