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TCP/IP and Data Communications Administration Guide

DHCP Configurations Received Are Invalid

Configurations can be invalid for two reasons:

  1. The client determines by ARP that the IP address offered to it is in use elsewhere. In this case, the client will send a DHCPDECLINE message to the server. If the server offers more than two bad addresses, dhcpagent fails.

  2. The client gets offers, but when it tries to confirm them, the server sends a DHCPNAK message instead of a confirmation. If the client receives DHCPNAK messages more than twice, dhcpagent fails. This indicates a malfunctioning server.