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DHCP Client Address Conflicts

Updated: December 11, 2007

Applies To: Windows Server 2008

Dynamic Host Configuration Protocol (DHCP) operates on a lease renewal basis. During the leasing process, IP address conflicts can occur as leases are renewed and expired. Client lease requests might be denied by the server for invalid (out of pool) or duplicate IP addresses. Multiple IP address conflict messages can indicate that your lease period, your scope, or both, need adjustment in your DHCP server configuration.

Events

Event ID Source Message

1000

Microsoft-Windows-DHCP-Client

Your computer has lost the lease to its IP address %2 for the network adapter with MAC address %1.

1002

Microsoft-Windows-DHCP-Client

The IP address lease %1 for the network adapter with MAC address %2 has been denied by the DHCP server %3 (The DHCP server sent a DHCPNACK message).

1005

Microsoft-Windows-DHCP-Client

Your computer has detected that the IP address %1 for the network adapter with MAC address %2 is already in use on the network. Your computer will automatically attempt to obtain a different address.

Related Management Information

DHCP Client

DHCP Infrastructure

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