Managing HP Serviceguard for Linux, Eighth Edition, March 2008

Understanding Serviceguard Software Components
How the Network Manager Works
Chapter 382
ARP request. The sender and receiver protocol address fields of the ARP
request message are both set to the same relocatable IP address. This
ensures that nodes receiving the message will not send replies.
Unlike IPv4, IPv6 addresses use NDP messages to determine the
link-layer addresses of their neighbors.