Template:Ref RFC/db/64

RFC	Status	Reference	Notes
6405	Informational	A. Uzelac; Y. Lee, eds. (November 2011). Voice over IP (VoIP) SIP Peering Use Cases. IETF. doi:10.17487/RFC6405. ISSN 2070-1721. RFC 6405.
6429	Obsolete	M. Bashyam; M. Jethanandani; A. Ramaiah (December 2011). TCP Sender Clarification for Persist Condition. IETF. doi:10.17487/RFC6429. ISSN 2070-1721. RFC 6429.	Obsoleted by RFC 9293.
6437	Proposed Standard	S. Amante; B. Carpenter; S. Jiang; J. Rajahalme (November 2011). IPv6 Flow Label Specification. IETF. doi:10.17487/RFC6437. ISSN 2070-1721. RFC 6437.	Obsoletes RFC 3697. Updates RFC 2205 and 2460.
6441	Best Current Practice	L. Vegoda (November 2011). Time to Remove Filters for Previously Unallocated IPv4 /8s. IETF. doi:10.17487/RFC6441. ISSN 2070-1721. BCP 171. RFC 6441.
6471	Informational	C. Lewis; M. Sergeant (January 2012). Overview of Best Email DNS-Based List (DNSBL) Operational Practices. Internet Research Task Force (IRTF). doi:10.17487/RFC6471. ISSN 2070-1721. RFC 6471.