DHCPRequest for 0.0.0.0

[Dave Nedved]

It may not be anything like what I had, but I used to get that on my network
on the odd occasion.

It turned out it was a client issue, mostly it was customers using windows
vista without any service packs..

 

Updating clients pc's with the latest service packs, or:

http://support.microsoft.com/kb/928233 Seemed to fix it.

 

Dave Nedved
  - FlexiNet Information Technology.

P.O. Box 526 COTTON TREE
Queensland, 4558, Australia.

( +61 (0)7 5452 7200
2 +61 (0)7 5452 7211
*  <mailto:dnedved at flexinet.com.au> dnedved at flexinet.com.au
8  <http://www.flexinet.com.au/> www.flexinet.com.au 

 

From: dhcp-users-bounces at lists.isc.org
[mailto:dhcp-users-bounces at lists.isc.org] On Behalf Of Defryn, Guy
Sent: Wednesday, 18 March 2009 12:03 PM
To: Users of ISC DHCP
Subject: DHCPRequest for 0.0.0.0

 

Hi,

 

Someone reported that one of their clients is unable to DHCP.
Looking at the leases file, there is an active lease and it should be
working.
When looking into logs I found the entries below.

 

It seems to get an ACK but at the same time another Request for 0.0.0.0 goes
out.
Why would a client issue another request after getting an ACK? Is there an
issue on the client side?

 

 

Mar 17 16:19:55 srv-net1 dhcpd: DHCPDISCOVER from 00:0c:f1:6d:bc:c1 via
205.112.169.1

Mar 17 16:19:56 srv-net1 dhcpd: DHCPOFFER on 205.112.169.97 to
00:0c:f1:6d:bc:c1 via 205.112.169.1

Mar 17 16:19:56 srv-net1 dhcpd: DHCPREQUEST for 205.112.169.97
(205.112.128.32) from 00:0c:f1:6d:bc:c1 via 205.112.169.1

Mar 17 16:19:56 srv-net1 dhcpd: DHCPACK on 205.112.169.97 to
00:0c:f1:6d:bc:c1 via 205.112.169.1

Mar 17 16:20:05 srv-net1 dhcpd: DHCPDISCOVER from 00:0c:f1:6d:bc:c1 via
205.112.169.1

Mar 17 16:20:05 srv-net1 dhcpd: DHCPOFFER on 205.112.169.97 to
00:0c:f1:6d:bc:c1 via 205.112.169.1

Mar 17 16:20:05 srv-net1 dhcpd: DHCPREQUEST for 205.112.169.97
(205.112.128.105) from 00:0c:f1:6d:bc:c1 via 205.112.169.1

Mar 17 16:20:05 srv-net1 dhcpd: DHCPACK on 205.112.169.97 to
00:0c:f1:6d:bc:c1 via 205.112.169.1

Mar 17 16:20:05 srv-net1 dhcpd: DHCPREQUEST for 0.0.0.0 from
00:0c:f1:6d:bc:c1 via 205.112.169.1: unknown lease 0.0.0.0.

Mar 17 16:20:14 srv-net1 dhcpd: DHCPREQUEST for 0.0.0.0 from
00:0c:f1:6d:bc:c1 via 205.112.169.1: unknown lease 0.0.0.0.

 

cheers

 

Guy Defryn

Infrastructure Development Engineer

Information Technology Services

Massey University

 

Address: P.O. Bag 11 222, Palmerston North, New Zealand

Telephone: +64-6-3505799
Web: http://www.massey.ac.nz/

 

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