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        RFC 1433:

        Title:      Directed ARP
        Author:     J. Garrett, J. Hagan & J. Wong
        Mailbox:    jwg@garage.att.com, Hagan@UPENN.EDU
                    jwong@garage.att.com
        Pages:      18
        Characters: 41,028
        Updates/Obsoletes:  none


A router with an interface to two IP networks via the same link level
interface could observe that the two IP networks share the same link
level network, and could advertise that information to hosts (via
ICMP Redirects) and routers (via dynamic routing protocols).
However, a host or router on only one of the IP networks could not
use that information to communicate directly with hosts and routers
on the other IP network unless it could resolve IP addresses on the
"foreign" IP network to their corresponding link level addresses.
Directed ARP is a dynamic address resolution procedure that enables
hosts and routers to resolve advertised potential next-hop IP
addresses on foreign IP networks to their associated link level
addresses.

This memo defines an Experimental Protocol for the Internet
community.  Discussion and suggestions for improvement are requested.
Please refer to the current edition of the "IAB Official Protocol
Standards" for the standardization state and status of this protocol.
Distribution of this memo is unlimited.

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Joyce K. Reynolds
USC/Information Sciences Institute