proxy Address Resolution Protocol. Variation of the ARP protocol in which an intermediate device (for example, a router) sends an ARP response on behalf of an end node to the requesting host. Proxy ARP can lessen bandwidth use on slow-speed WAN links. See also ARP.
The function of a router sending an Address Resolution Protocol (ARP) response to a host which does not know how to use a router, and that pretends to be a remote target host.
A technique employed by routers to obtain IP datagrams for forwarding. The router answers ARP requests for non local IP address with its own hardware address, ensuring that all datagrams for that IP address will be sent to the router.