[Nagiosplug-help] check_dhcp across subnets

Ian Rarity Ian.Rarity at espc.com
Fri Mar 14 16:58:16 CET 2008

I'd suspect your router, in that case.  Perhaps it's been explicitly
configured not to forward DHCP packets as well as broadcasts?  You could
always use Wireshark or something similar to see if the requests are
actually making it as far as the DHCP server.


Ian Rarity
Technical Engineer
ESPC (UK) Ltd.
T: (44)131 624 8000
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http://www.espc.com ( http://www.espc.com/ )

>>> Scott Machtmes <scottm at brocade.com> 13/03/2008 22:26 >>>
That's actually what I tried using the -u but it's not working. My dhcp

servers are windows 2003 servers by the way with no firewalls.

Ian Rarity wrote:
>>>> Holger Weiss <holger at CIS.FU-Berlin.DE> 13/03/2008 10:44 >>>
> Or if you tell check_dhcp to pretend to be a DHCP relay using the
> flag :-)  It'll then send a normal unicast packet which should be
> routed
> as any other packet (unless it's filtered, of course).
> Ah - I think I need to update my version of the plugins...
> Ta,
> IR.

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