I have seen this happen with dual nics in a server. Solution is to use the nics in a cluster. Make sure that you have updated NIC drivers as well. Also make sure that the DHCP server isn't giving out the server address via dhcp.
Make sure no one (you know how NO one is) did a custom mac address or used a mac address changer somewhere. Rick Gasper Manager, Network Services King's College 133 N. River St Wilkes-Barre PA 18711 PH: 570-208-5845 Fax: 570-208-6072 Cell: 570-760-0335 rickgas...@kings.edu<mailto:rickgas...@kings.edu> Don't become a phishing victim!! King's College and other reputable organizations will never use email to request that you reply with your password, Social Security number or confidential personal information. From: Ralph Smith [mailto:m...@gatewayindustries.org] Sent: Tuesday, July 19, 2011 12:56 PM To: NT System Admin Issues Subject: Weird Duplicate IP address problem I have a Windows 2008 Server with a statically assigned IP address that seems to have an issue with another device on my network. Whenever the server is rebooted, it displays an error that there is a duplicate IP address on the network, and changes its own address to an auto-configured 169... address. The thing is it says it conflicts with the device having the IP address of 0.0.0.0., and gives the MAC address of the conflicting device. As far as I know this means it's a MAC address conflict. However the conflicting device does not share the IP address or the MAC address of the server. The other device happens to be an Infocus projector that gets it IP Address through a DHCP reservation. If I pull the cable on the projector and then reset the NIC on the server there are no problems. If I then plug the projector back in the two machines coexist happily until I have to reboot the server. Also, if I change the IP address on the server NIC without disconnecting the projector, the server is happy with its new address until the next time it reboots. At which point I can change it back to its original IP address and again all is well. So it detects an IP address conflict, but there is no duplicate IP address on the network, nor is the MAC address a duplicate. It only throws this error when the server boots, otherwise its fine. The server is a VM on Hyper-V and is a DC that also does DNS and DHCP. I've looked at DNS, WINS, DHCP and don't see anything amiss. Any suggestions on how to fix this? Thanks. ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to listmana...@lyris.sunbeltsoftware.com<mailto:listmana...@lyris.sunbeltsoftware.com> with the body: unsubscribe ntsysadmin ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to listmana...@lyris.sunbeltsoftware.com with the body: unsubscribe ntsysadmin
