| 4601 | Protocol Independent Multicast - Sparse Mode (PIM-SM): Protocol Specification (Revised)B. Fenner, M. Handley, H. Holbrook, I. Kouvelas · obsoleted by RFC 7761 | Proposed Standard | August 2006 |
| 4602 | Protocol Independent Multicast - Sparse Mode (PIM-SM) IETF Proposed Standard Requirements AnalysisT. Pusateri | Informational | August 2006 |
| 4603 | Additional Values for the NAS-Port-Type AttributeG. Zorn, G. Weber, R. Foltak | Informational | July 2006 |
| 4604 | Using Internet Group Management Protocol Version 3 (IGMPv3) and Multicast Listener Discovery Protocol Version 2 (MLDv2) for Source-Specific MulticastH. Holbrook, B. Cain, B. Haberman | Proposed Standard | August 2006 |
| 4605 | Internet Group Management Protocol (IGMP) / Multicast Listener Discovery (MLD)-Based Multicast Forwarding ("IGMP/MLD Proxying")B. Fenner, H. He, B. Haberman, H. Sandick | Proposed Standard | August 2006 |
| 4606 | Generalized Multi-Protocol Label Switching (GMPLS) Extensions for Synchronous Optical Network (SONET) and Synchronous Digital Hierarchy (SDH) ControlE. Mannie, D. Papadimitriou | Proposed Standard | August 2006 |
| 4607 | Source-Specific Multicast for IPH. Holbrook, B. Cain | Proposed Standard | August 2006 |
| 4608 | Source-Specific Protocol Independent Multicast in 232/8D. Meyer, R. Rockell, G. Shepherd | Best Current Practice | August 2006 |
| 4609 | Protocol Independent Multicast - Sparse Mode (PIM-SM) Multicast Routing Security Issues and EnhancementsP. Savola, R. Lehtonen, D. Meyer | Informational | October 2006 |
| 4610 | Anycast-RP Using Protocol Independent Multicast (PIM)D. Farinacci, Y. Cai | Proposed Standard | August 2006 |
| 4611 | Multicast Source Discovery Protocol (MSDP) Deployment ScenariosM. McBride, J. Meylor, D. Meyer | Best Current Practice | August 2006 |
| 4612 | Real-Time Facsimile (T.38) - audio/t38 MIME Sub-type RegistrationP. Jones, H. Tamura | Historic | August 2006 |
| 4613 | Media Type Registrations for Downloadable Sounds for Musical Instrument Digital Interface (MIDI)P. Frojdh, U. Lindgren, M. Westerlund | Informational | September 2006 |
| 4614 | A Roadmap for Transmission Control Protocol (TCP) Specification DocumentsM. Duke, R. Braden, W. Eddy, E. Blanton · obsoleted by RFC 7414 | Informational | September 2006 |
| 4615 | The Advanced Encryption Standard-Cipher-based Message Authentication Code-Pseudo-Random Function-128 (AES-CMAC-PRF-128) Algorithm for the Internet Key Exchange Protocol (IKE)J. Song, R. Poovendran, J. Lee, T. Iwata | Proposed Standard | August 2006 |
| 4616 | The PLAIN Simple Authentication and Security Layer (SASL) MechanismK. Zeilenga, Ed. | Proposed Standard | August 2006 |
| 4617 | A Uniform Resource Name (URN) Formal Namespace for the Latvian National Government Integration ProjectJ. Kornijenko | Informational | August 2006 |
| 4618 | Encapsulation Methods for Transport of PPP/High-Level Data Link Control (HDLC) over MPLS NetworksL. Martini, E. Rosen, G. Heron, A. Malis | Proposed Standard | September 2006 |
| 4619 | Encapsulation Methods for Transport of Frame Relay over Multiprotocol Label Switching (MPLS) NetworksL. Martini, Ed., C. Kawa, Ed., A. Malis, Ed. | Proposed Standard | September 2006 |
| 4620 | IPv6 Node Information QueriesM. Crawford, B. Haberman, Ed. | Experimental | August 2006 |
| 4621 | Design of the IKEv2 Mobility and Multihoming (MOBIKE) ProtocolT. Kivinen, H. Tschofenig | Informational | August 2006 |
| 4622 | Internationalized Resource Identifiers (IRIs) and Uniform Resource Identifiers (URIs) for the Extensible Messaging and Presence Protocol (XMPP)P. Saint-Andre · obsoleted by RFC 5122 | Proposed Standard | August 2006 |
| 4623 | Pseudowire Emulation Edge-to-Edge (PWE3) Fragmentation and ReassemblyA. Malis, M. Townsley | Proposed Standard | August 2006 |
| 4624 | Multicast Source Discovery Protocol (MSDP) MIBB. Fenner, D. Thaler | Experimental | October 2006 |
| 4625 | Fibre Channel Routing Information MIBC. DeSanti, K. McCloghrie, S. Kode, S. Gai | Proposed Standard | September 2006 |
| 4626 | MIB for Fibre Channel's Fabric Shortest Path First (FSPF) ProtocolC. DeSanti, V. Gaonkar, K. McCloghrie, S. Gai | Proposed Standard | September 2006 |
| 4627 | The application/json Media Type for JavaScript Object Notation (JSON)D. Crockford · obsoleted by RFC 7159 | Informational | July 2006 |
| 4628 | RTP Payload Format for H.263 Moving RFC 2190 to Historic StatusR. Even | Informational | February 2007 |
| 4629 | RTP Payload Format for ITU-T Rec. H.263 VideoJ. Ott, C. Bormann, G. Sullivan, S. Wenger, R. Even, Ed. | Proposed Standard | January 2007 |
| 4630 | Update to DirectoryString Processing in the Internet X.509 Public Key Infrastructure Certificate and Certificate Revocation List (CRL) ProfileR. Housley, S. Santesson · obsoleted by RFC 5280 | Proposed Standard | August 2006 |
| 4631 | Link Management Protocol (LMP) Management Information Base (MIB)M. Dubuc, T. Nadeau, J. Lang, E. McGinnis, A. Farrel | Proposed Standard | September 2006 |
| 4632 | Classless Inter-domain Routing (CIDR): The Internet Address Assignment and Aggregation PlanV. Fuller, T. Li | Best Current Practice | August 2006 |
| 4633 | Experiment in Long-Term Suspensions From Internet Engineering Task Force (IETF) Mailing ListsS. Hartman | Experimental | August 2006 |
| 4634 | US Secure Hash Algorithms (SHA and HMAC-SHA)D. Eastlake 3rd, T. Hansen · obsoleted by RFC 6234 | Informational | August 2006 |
| 4635 | HMAC SHA (Hashed Message Authentication Code, Secure Hash Algorithm) TSIG Algorithm IdentifiersD. Eastlake 3rd · obsoleted by RFC 8945 | Proposed Standard | August 2006 |
| 4636 | Foreign Agent Error Extension for Mobile IPv4C. Perkins | Proposed Standard | October 2006 |
| 4638 | Accommodating a Maximum Transit Unit/Maximum Receive Unit (MTU/MRU) Greater Than 1492 in the Point-to-Point Protocol over Ethernet (PPPoE)P. Arberg, D. Kourkouzelis, M. Duckett, T. Anschutz, J. Moisand | Informational | September 2006 |
| 4639 | Cable Device Management Information Base for Data-Over-Cable Service Interface Specification (DOCSIS) Compliant Cable Modems and Cable Modem Termination SystemsR. Woundy, K. Marez | Proposed Standard | December 2006 |
| 4640 | Problem Statement for bootstrapping Mobile IPv6 (MIPv6)A. Patel, Ed., G. Giaretta, Ed. | Informational | September 2006 |
| 4641 | DNSSEC Operational PracticesO. Kolkman, R. Gieben · obsoleted by RFC 6781 | Informational | September 2006 |
| 4642 | Using Transport Layer Security (TLS) with Network News Transfer Protocol (NNTP)K. Murchison, J. Vinocur, C. Newman | Proposed Standard | October 2006 |
| 4643 | Network News Transfer Protocol (NNTP) Extension for AuthenticationJ. Vinocur, K. Murchison | Proposed Standard | October 2006 |
| 4644 | Network News Transfer Protocol (NNTP) Extension for Streaming FeedsJ. Vinocur, K. Murchison | Proposed Standard | October 2006 |
| 4645 | Initial Language Subtag RegistryD. Ewell | Informational | September 2006 |
| 4646 | Tags for Identifying LanguagesA. Phillips, M. Davis · obsoleted by RFC 5646 | Best Current Practice | September 2006 |
| 4647 | Matching of Language TagsA. Phillips, Ed., M. Davis, Ed. | Best Current Practice | September 2006 |
| 4648 | The Base16, Base32, and Base64 Data EncodingsS. Josefsson | Proposed Standard | October 2006 |
| 4649 | Dynamic Host Configuration Protocol for IPv6 (DHCPv6) Relay Agent Remote-ID OptionB. Volz | Proposed Standard | August 2006 |
| 4650 | HMAC-Authenticated Diffie-Hellman for Multimedia Internet KEYing (MIKEY)M. Euchner | Proposed Standard | September 2006 |
| 4651 | A Taxonomy and Analysis of Enhancements to Mobile IPv6 Route OptimizationC. Vogt, J. Arkko | Informational | February 2007 |
| 4652 | Evaluation of Existing Routing Protocols against Automatic Switched Optical Network (ASON) Routing RequirementsD. Papadimitriou, Ed., L. Ong, J. Sadler, S. Shew, D. Ward | Informational | October 2006 |
| 4653 | Improving the Robustness of TCP to Non-Congestion EventsS. Bhandarkar, A. L. N. Reddy, M. Allman, E. Blanton | Experimental | August 2006 |
| 4654 | TCP-Friendly Multicast Congestion Control (TFMCC): Protocol SpecificationJ. Widmer, M. Handley | Experimental | August 2006 |
| 4655 | A Path Computation Element (PCE)-Based ArchitectureA. Farrel, J.-P. Vasseur, J. Ash | Informational | August 2006 |
| 4656 | A One-way Active Measurement Protocol (OWAMP)S. Shalunov, B. Teitelbaum, A. Karp, J. Boote, M. Zekauskas | Proposed Standard | September 2006 |
| 4657 | Path Computation Element (PCE) Communication Protocol Generic RequirementsJ. Ash, Ed., J.L. Le Roux, Ed. | Informational | September 2006 |
| 4659 | BGP-MPLS IP Virtual Private Network (VPN) Extension for IPv6 VPNJ. De Clercq, D. Ooms, M. Carugi, F. Le Faucheur | Proposed Standard | September 2006 |
| 4660 | Functional Description of Event Notification FilteringH. Khartabil, E. Leppanen, M. Lonnfors, J. Costa-Requena | Proposed Standard | September 2006 |
| 4661 | An Extensible Markup Language (XML)-Based Format for Event Notification FilteringH. Khartabil, E. Leppanen, M. Lonnfors, J. Costa-Requena | Proposed Standard | September 2006 |
| 4662 | A Session Initiation Protocol (SIP) Event Notification Extension for Resource ListsA. B. Roach, B. Campbell, J. Rosenberg | Proposed Standard | August 2006 |
| 4663 | Transferring MIB Work from IETF Bridge MIB WG to IEEE 802.1 WGD. Harrington | Informational | September 2006 |
| 4664 | Framework for Layer 2 Virtual Private Networks (L2VPNs)L. Andersson, Ed., E. Rosen, Ed. | Informational | September 2006 |
| 4665 | Service Requirements for Layer 2 Provider-Provisioned Virtual Private NetworksW. Augustyn, Ed., Y. Serbest, Ed. | Informational | September 2006 |
| 4666 | Signaling System 7 (SS7) Message Transfer Part 3 (MTP3) - User Adaptation Layer (M3UA)K. Morneault, Ed., J. Pastor-Balbas, Ed. | Proposed Standard | September 2006 |
| 4667 | Layer 2 Virtual Private Network (L2VPN) Extensions for Layer 2 Tunneling Protocol (L2TP)W. Luo | Proposed Standard | September 2006 |
| 4668 | RADIUS Authentication Client MIB for IPv6D. Nelson | Proposed Standard | August 2006 |
| 4669 | RADIUS Authentication Server MIB for IPv6D. Nelson | Proposed Standard | August 2006 |
| 4670 | RADIUS Accounting Client MIB for IPv6D. Nelson | Informational | August 2006 |
| 4671 | RADIUS Accounting Server MIB for IPv6D. Nelson | Informational | August 2006 |
| 4672 | RADIUS Dynamic Authorization Client MIBS. De Cnodder, N. Jonnala, M. Chiba | Informational | September 2006 |
| 4673 | RADIUS Dynamic Authorization Server MIBS. De Cnodder, N. Jonnala, M. Chiba | Informational | September 2006 |
| 4674 | Requirements for Path Computation Element (PCE) DiscoveryJ.L. Le Roux, Ed. | Informational | October 2006 |
| 4675 | RADIUS Attributes for Virtual LAN and Priority SupportP. Congdon, M. Sanchez, B. Aboba | Proposed Standard | September 2006 |
| 4676 | Dynamic Host Configuration Protocol (DHCPv4 and DHCPv6) Option for Civic Addresses Configuration InformationH. Schulzrinne · obsoleted by RFC 4776 | Proposed Standard | October 2006 |
| 4677 | The Tao of IETF - A Novice's Guide to the Internet Engineering Task ForceP. Hoffman, S. Harris · obsoleted by RFC 6722 | Informational | September 2006 |
| 4678 | Server/Application State Protocol v1A. Bivens | Informational | September 2006 |
| 4679 | DSL Forum Vendor-Specific RADIUS AttributesV. Mammoliti, G. Zorn, P. Arberg, R. Rennison | Informational | September 2006 |
| 4680 | TLS Handshake Message for Supplemental DataS. Santesson | Proposed Standard | October 2006 |
| 4681 | TLS User Mapping ExtensionS. Santesson, A. Medvinsky, J. Ball | Proposed Standard | October 2006 |
| 4682 | Multimedia Terminal Adapter (MTA) Management Information Base for PacketCable- and IPCablecom-Compliant DevicesE. Nechamkin, J-F. Mule | Proposed Standard | December 2006 |
| 4683 | Internet X.509 Public Key Infrastructure Subject Identification Method (SIM)J. Park, J. Lee, H. Lee, S. Park, T. Polk | Proposed Standard | October 2006 |
| 4684 | Constrained Route Distribution for Border Gateway Protocol/MultiProtocol Label Switching (BGP/MPLS) Internet Protocol (IP) Virtual Private Networks (VPNs)P. Marques, R. Bonica, L. Fang, L. Martini, R. Raszuk, K. Patel, J. Guichard | Proposed Standard | November 2006 |
| 4685 | Atom Threading ExtensionsJ. Snell | Proposed Standard | September 2006 |
| 4686 | Analysis of Threats Motivating DomainKeys Identified Mail (DKIM)J. Fenton | Informational | September 2006 |
| 4687 | Operations and Management (OAM) Requirements for Point-to-Multipoint MPLS NetworksS. Yasukawa, A. Farrel, D. King, T. Nadeau | Informational | September 2006 |
| 4688 | A Uniform Resource Name (URN) Namespace for Aerospace and Defence Industries Association of Europe (ASD) Specification 1000DS. Rushing | Informational | October 2006 |
| 4689 | Terminology for Benchmarking Network-layer Traffic Control MechanismsS. Poretsky, J. Perser, S. Erramilli, S. Khurana | Informational | October 2006 |
| 4690 | Review and Recommendations for Internationalized Domain Names (IDNs)J. Klensin, P. Faltstrom, C. Karp, IAB | Informational | September 2006 |
| 4691 | Guidelines for Acting as an IETF Liaison to Another OrganizationL. Andersson, Ed. | Informational | October 2006 |
| 4692 | Considerations on the IPv6 Host Density MetricG. Huston | Informational | October 2006 |
| 4693 | IETF Operational NotesH. Alvestrand · obsoleted by RFC 6393 | Historic | October 2006 |
| 4694 | Number Portability Parameters for the "tel" URIJ. Yu | Proposed Standard | October 2006 |
| 4695 | RTP Payload Format for MIDIJ. Lazzaro, J. Wawrzynek · obsoleted by RFC 6295 | Proposed Standard | November 2006 |
| 4696 | An Implementation Guide for RTP MIDIJ. Lazzaro, J. Wawrzynek | Informational | November 2006 |
| 4697 | Observed DNS Resolution MisbehaviorM. Larson, P. Barber | Best Current Practice | October 2006 |
| 4698 | IRIS: An Address Registry (areg) Type for the Internet Registry Information ServiceE. Gunduz, A. Newton, S. Kerr | Proposed Standard | October 2006 |