DHCP static leases

Denis Laventure Denis_Laventure at uqac.ca
Wed Jan 28 14:52:45 UTC 2009

I think the same thing.


We had this problem here too. Use Wireshark on the same subnet to find the IP of the workstation that's sending those wrong ack. We had 2 of those infected machine on our network. I don't remember if we found the virus, but I think we just formatted the PC.


Denis Laventure

Service des technologies de l'information

Université du Québec à Chicoutimi (UQAC)

418-545-5011 poste 2380



De : dhcp-users-bounces at lists.isc.org [mailto:dhcp-users-bounces at lists.isc.org] De la part de zeshan
Envoyé : 28 janvier 2009 03:44
À : Users of ISC DHCP
Objet : Re: DHCP static leases


    its just virus in network nothing any thing

	----- Original Message ----- 

	From: Samer Sayeed <mailto:samers at teamf1.com>  

	To: Users of ISC DHCP <mailto:dhcp-users at lists.isc.org>  

	Sent: 26 January, 2009 7:35 PM

	Subject: Re: DHCP static leases


	Hi Brandon,
	                        Does your dhcp server range includes the static lease ? 

	On Mon, Jan 26, 2009 at 8:48 PM, Brandon Munger <bmunger at edison.edu> wrote:

	Hello everyone.
	I have had a strange problem for some time with dhcpd.
	I have quite a bit of static leases defined in the configuration file, but
	once in a while, a machine will request that ip address from another MAC
	address and the dhcp server will acknowledge that request.  This creates
	an IP conflict when the machine with the static lease turns on.  Is there a
	configuration option to fix this?  Thank you
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	Thanks & Regards
	SAmer SAyeed


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