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        RFC 1702:

        Title:      Generic Routing Encapsulation over IPv4 networks 
        Author:     S. Hanks, T. Li, D. Farinacci & P. Traina
        Mailbox:    stan@netsmiths.com, tli@cisco.com, dino@cisco.com,
                    pst@cisco.com 
        Pages:      4
        Characters: 7,288
        Updates/Obsoletes:  none


In an earlier memo (RFC 1701), we described GRE, a mechanism for
encapsulating arbitrary packets within an arbitrary transport
protocol.  This is a companion memo which describes the use of GRE
with IP.  This memo addresses the case of using IP as the delivery
protocol or the payload protocol and the special case of IP as both
the delivery and payload.  This memo also describes using IP addresses
and autonomous system numbers as part of a GRE source route.

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Joyce K. Reynolds
USC/Information Sciences Institute