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. This memo provides information for the Internet community. This memo does not specify an Internet standard of any kind.| IETF Datatracker
This document specifies a protocol for performing encapsulation of an arbitrary network layer protocol over another arbitrary network layer protocol. This memo provides information for the Internet community. This memo does not specify an Internet standard of any kind.| IETF Datatracker
This memo specifies the incorporation of ECN (Explicit Congestion Notification) to TCP and IP, including ECN's use of two bits in the IP header. [STANDARDS-TRACK]| IETF Datatracker
