We are running a Windows 2008 R2 DHCP server. We just added a new DHCP server and removed the old one about three weeks ago.
I have an employee who is reporting IP conflict errors every day now for the past week. I checked the DHCP logs and found zero conflicts. I also turned conflict detection attempts up to 1 to try avoiding issues.
The only thing I found in the logs which was peculiar is the amount of times his interface attempts to renew its IP. Here is an example:
30,12/19/13,17:41:34,DNS Update Request,192.168.1.109,Galen-THINK.example.com,,,0,6,,,
11,12/19/13,17:41:34,Renew,192.168.1.109,Galen-THINK.example.com,8C705257C4D2,,941800471,0,,,
32,12/19/13,17:41:34,DNS Update Successful,192.168.1.109,Galen-THINK.example.com,,,0,6,,,
30,12/19/13,17:41:38,DNS Update Request,192.168.1.109,Galen-THINK.example.com,,,0,6,,,
11,12/19/13,17:41:38,Renew,192.168.1.109,Galen-THINK.example.com,8C705257C4D2,,941800471,0,,,
32,12/19/13,17:41:38,DNS Update Successful,192.168.1.109,Galen-THINK.example.com,,,0,6,,,
30,12/19/13,17:41:42,DNS Update Request,192.168.1.109,Galen-THINK.example.com,,,0,6,,,
11,12/19/13,17:41:42,Renew,192.168.1.109,Galen-THINK.example.com,8C705257C4D2,,941800471,0,,,
32,12/19/13,17:41:42,DNS Update Successful,192.168.1.109,Galen-THINK.example.com,,,0,6,,,
30,12/19/13,17:41:49,DNS Update Request,192.168.1.109,Galen-THINK.example.com,,,0,6,,,
11,12/19/13,17:41:49,Renew,192.168.1.109,Galen-THINK.example.com,8C705257C4D2,,941800471,0,,,
32,12/19/13,17:41:49,DNS Update Successful,192.168.1.109,Galen-THINK.example.com,,,0,6,,,
30,12/19/13,17:42:07,DNS Update Request,192.168.1.109,Galen-THINK.example.com,,,0,6,,,
11,12/19/13,17:42:07,Renew,192.168.1.109,Galen-THINK.example.com,8C705257C4D2,,2755917027,0,,,
32,12/19/13,17:42:07,DNS Update Successful,192.168.1.109,Galen-THINK.example.com,,,0,6,,,
30,12/19/13,17:42:10,DNS Update Request,192.168.1.109,Galen-THINK.example.com,,,0,6,,,
11,12/19/13,17:42:10,Renew,192.168.1.109,Galen-THINK.example.com,8C705257C4D2,,2755917027,0,,,
32,12/19/13,17:42:10,DNS Update Successful,192.168.1.109,Galen-THINK.example.com,,,0,6,,,
30,12/19/13,17:42:17,DNS Update Request,192.168.1.109,Galen-THINK.example.com,,,0,6,,,
11,12/19/13,17:42:17,Renew,192.168.1.109,Galen-THINK.example.com,8C705257C4D2,,2755917027,0,,,
32,12/19/13,17:42:17,DNS Update Successful,192.168.1.109,Galen-THINK.example.com,,,0,6,,,
So could this be the reason he is seeing IP conflict errors? If not, how can I further investigate the cause?
Thanks!