Technology, Data Communication Terms, Glossary and Dictionary
Proxy ARP is a technique for using the ARP protocol to provide an ad hoc routing mechanism. Proxy ARP allows a host, usually a router, to answer ARP requests intended for another machine. By "faking" its identity, the router accepts responsibility for routing packets to the "real" destination. Proxy ARP can help machines on a subnet reach remote subnets without configuring routing or a default gateway.