History of IPv6: (continued)

• Allowed people to submit proposals
• First Had: CNAT, IP Encaps, Nimrod, SimpleCLNP
• Then: PIP (P IP), Simple Internet Protocol (SIP), TP/IX
• Some Evolved: SimpleCLNP $->$ TUBA (TCP and UDP with bigger addresses), IP Encaps $->$ IPAE (IP Addr Encapsulation)
• Some Merged: SIP merger with IPAE into SIP, SIP then merged with PIP into SIPP
• Name change: TP/IX $->$ CATNIP
• THEN: Three competing proposals: CATNIP, TUBA, SIPP
• RESULT: SIPP kinda won