Binary package “dhcp-probe” in ubuntu precise
network DHCP or BootP server discover
dhcp_probe attempts to discover DHCP and BootP servers on a directly-attached
Ethernet network. A network administrator can use this tool to locate un-
authorized DHCP and BootP servers.
Essentially, dhcp_probe mimics a BootP or DHCP client in a variety of
possible states, attempting to provoke responses from servers.