[dragon]

Is there anything apart from an actual IP conflict that can cause windows XP to display the message about having an IP conflict with another machine on the network?

Had a machine that was complaining of an IP conflict earlier but to the best of my knowledge there wasn't one.

I checked the DHCP server and it was showing the IP as correctly allocated to that machine.

I checked the ARP tables on the switches and the internet gateway/router and couldn't find any duplicate entries for that IP address. The ARP table has the correct MAC in it against that IP address

I also ran arping -b -I eth1 <ip> from a Linux machine on the same Lan

I only ever saw one MAC address responding to the broadcast arp and it was the correct MAC of the NIC in that machine.

Disconnected the machine with a ping and arping running and the responses stopped as expected.