Template:Ref RFC/db/55

RFC	Status	Reference	Notes
5513	Informational	A. Farrel (1 April 2009). IANA Considerations for Three Letter Acronyms. Network Working Group. doi:10.17487/RFC5513. RFC 5513.	This is an April Fools' Day Request for Comments.
5514	Experimental	E. Vyncke (1 April 2009). IPv6 over Social Networks. Network Working Group. doi:10.17487/RFC5514. RFC 5514.	This is an April Fools' Day Request for Comments.
5517	Informational	S. HomChaudhuri; M. Foschiano (June 2009). Cisco Systems' Private VLANs: Scalable Security in a Multi-Client Environment. IETF. doi:10.17487/RFC5517. RFC 5517.	Independent Submission.
5533	Proposed Standard	E. Nordmark; M. Bagnulo (June 2009). Shim6: Level 3 Multihoming Shim Protocol for IPv6. Networking Working Group. doi:10.17487/RFC5533. RFC 5533.
5556	Informational	J. Touch; R. Perlman (May 2009). Transparent Interconnection of Lots of Links (TRILL): Problem and Applicability Statement. Networking Working Group. doi:10.17487/RFC5556. RFC 5556.
5562	Experimental	A. Kuzmanovic; A. Mondal; S. Floyd; K. Ramakrishnan (June 2009). Adding Explicit Congestion Notification (ECN) Capability to TCP's SYN/ACK Packets. doi:10.17487/RFC5562. RFC 5562.
5572	Experimental	M. Blanchet; F. Parent (February 2010). IPv6 Tunnel Broker with the Tunnel Setup Protocol (TSP). doi:10.17487/RFC5572. ISSN 2070-1721. RFC 5572.