RFC 6245: Generic Routing Encapsulation (GRE) Key Extension for Mobile IPv4

The Generic Routing Encapsulation (GRE) specification contains a Key field, which MAY contain a value that is used to identify a particular GRE data stream.…

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Outgoing relationships (5 related RFCs)

Normative reference — RFC 2119: Key words for use in RFCs to Indicate Requirement Levels
Normative reference — RFC 2784: Generic Routing Encapsulation (GRE)
Normative reference — RFC 2890: Key and Sequence Number Extensions to GRE
Normative reference — RFC 5944: IP Mobility Support for IPv4, Revised
Normative reference — RFC 3024: Reverse Tunneling for Mobile IP, revised