Internet Documents

RFCs 9900 - 9999s

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RFC 9900 Updates to NETCONF Transport Port Numbers
 
Authors:M. Boucadair.
Date:December 2025
Formats:txt pdf xml html json
Status:PROPOSED STANDARD
DOI:10.17487/RFC 9900
This document releases IANA-assigned port numbers for services related to the Network Configuration Protocol (NETCONF) that have not been in use in production networks.
 
RFC 9901 Selective Disclosure for JSON Web Tokens
 
Authors:D. Fett, K. Yasuda, B. Campbell.
Date:November 2025
Formats:txt html pdf xml json
Status:PROPOSED STANDARD
DOI:10.17487/RFC 9901
This specification defines a mechanism for the selective disclosure of individual elements of a JSON data structure used as the payload of a JSON Web Signature (JWS). The primary use case is the selective disclosure of JSON Web Token (JWT) claims.
 
RFC 9902 A YANG Data Model for IS-IS Segment Routing over the MPLS Data Plane
 
Authors:S. Litkowski, Y. Qu, A. Lindem, I. Chen, J. Tantsura.
Date:December 2025
Formats:txt json html xml pdf
Status:PROPOSED STANDARD
DOI:10.17487/RFC 9902
This document defines a YANG data model that can be used to manageIS-IS extensions for Segment Routing (SR) over the MPLS data plane.
 
RFC 9903 A YANG Data Model for OSPF Segment Routing over the MPLS Data Plane
 
Authors:Y. Qu, A. Lindem, J. Zhang, I. Chen.
Date:December 2025
Formats:txt json xml pdf html
Status:PROPOSED STANDARD
DOI:10.17487/RFC 9903
This document defines a YANG data model that can be used to manageOSPF extensions for Segment Routing over the MPLS data plane.
 
RFC 9904 DNSSEC Cryptographic Algorithm Recommendation Update Process
 
Authors:W. Hardaker, W. Kumari.
Date:November 2025
Formats:txt html json xml pdf
Obsoletes:RFC 8624
Updates:RFC 9157
Status:PROPOSED STANDARD
DOI:10.17487/RFC 9904
The DNSSEC protocol makes use of various cryptographic algorithms to provide authentication of DNS data and proof of nonexistence. To ensure interoperability between DNS resolvers and DNS authoritative servers, it is necessary to specify both a set of algorithm implementation requirements and usage guidelines to ensure that there is at least one algorithm that all implementations support. This document replaces and obsoletes RFC 8624 and moves the canonical source of algorithm implementation requirements and usage guidance for DNSSEC from RFC 8624 to the IANA DNSSEC algorithm registries.This is done to allow the list of requirements to be more easily updated and referenced. Extensions to these registries can be made in future RFCs. This document also updates RFC 9157 and incorporates the revised IANA DNSSEC considerations from that RFC.

This document does not change the recommendation status (MUST, MAY,RECOMMENDED, etc.) of the algorithms listed in RFC 8624; that is the work of future documents.

 
RFC 9905 Deprecating the Use of SHA-1 in DNSSEC Signature Algorithms
 
Authors:W. Hardaker, W. Kumari.
Date:November 2025
Formats:txt html xml pdf json
Updates:RFC 4034, RFC 5155
Status:PROPOSED STANDARD
DOI:10.17487/RFC 9905
This document deprecates the use of the RSASHA1 andRSASHA1-NSEC3-SHA1 algorithms for the creation of DNS Public Key(DNSKEY) and Resource Record Signature (RRSIG) records.

It updates RFCs 4034 and 5155 as it deprecates the use of these algorithms.

 
RFC 9906 Deprecate Usage of ECC-GOST within DNSSEC
 
Authors:W. Hardaker, W. Kumari.
Date:November 2025
Formats:txt pdf json xml html
Status:PROPOSED STANDARD
DOI:10.17487/RFC 9906
This document retires the use of GOST R 34.10-2001 (mnemonic "ECC-GOST") and GOST R 34.11-94 within DNSSEC.

RFC 5933 (Historic) defined the use of GOST R 34.10-2001 and GOST R34.11-94 algorithms with DNS Security Extensions (DNSSEC). This document updates RFC 5933 by deprecating the use of ECC-GOST.

 
RFC 9908 Clarification and Enhancement of the CSR Attributes Definition in RFC 7030
 
Authors:M. Richardson, Ed., O. Friel, D. von Oheimb, D. Harkins.
Date:January 2026
Formats:txt pdf xml html json
Updates:RFC 7030, RFC 9148
Status:PROPOSED STANDARD
DOI:10.17487/RFC 9908
This document updates RFC 7030, "Enrollment over Secure Transport"(EST), clarifying how the Certificate Signing Request (CSR)Attributes Response can be used by an EST server to specify both CSR attribute Object Identifiers (OIDs) and CSR attribute values, particularly X.509 extension values, that the server expects the client to include in a subsequent CSR request. RFC 9148 is derived from RFC 7030 and is also updated.

RFC 7030 is ambiguous in its specification of the CSR AttributesResponse. This has resulted in implementation challenges and implementor confusion because there was no universal understanding of what was specified. This document clarifies the encoding rules.

This document also provides a new straightforward approach: using a template for CSR contents that may be partially filled in by the server. This also allows an EST server to specify a subjectDistinguished Name (DN).

 
RFC 9909 Internet X.509 Public Key Infrastructure -- Algorithm Identifiers for the Stateless Hash-Based Digital Signature Algorithm (SLH-DSA)
 
Authors:K. Bashiri, S. Fluhrer, S. Gazdag, D. Van Geest, S. Kousidis.
Date:December 2025
Formats:txt pdf html xml json
Status:PROPOSED STANDARD
DOI:10.17487/RFC 9909
Digital signatures are used within the X.509 Public KeyInfrastructure, such as X.509 certificates and Certificate RevocationLists (CRLs), as well as to sign messages. This document specifies the conventions for using the Stateless Hash-Based Digital SignatureAlgorithm (SLH-DSA) in the X.509 Public Key Infrastructure. The conventions for the associated signatures, subject public keys, and private keys are also specified.
 
RFC 9910 Registration Data Access Protocol (RDAP) Regional Internet Registry (RIR) Search
 
Authors:T. Harrison, J. Singh.
Date:January 2026
Formats:txt xml pdf html json
Status:PROPOSED STANDARD
DOI:10.17487/RFC 9910
The Registration Data Access Protocol (RDAP) is used by RegionalInternet Registries (RIRs) and Domain Name Registries (DNRs) to provide access to their resource registration information. The core specifications for RDAP define basic search functionality, but there are various search options related to IP addresses, IP prefixes, andAutonomous System Numbers (ASNs), which are provided by RIRs via their WHOIS services, but for which there is no corresponding RDAP functionality. This document extends RDAP to support those search options.
 
RFC 9911 Common YANG Data Types
 
Authors:J. Schönwälder, Ed..
Date:December 2025
Formats:txt html xml pdf json
Obsoletes:RFC 6991
Status:PROPOSED STANDARD
DOI:10.17487/RFC 9911
This document defines a collection of common data types to be used with the YANG data modeling language. It includes several new type definitions and obsoletes RFC 6991.
 
RFC 9915 Dynamic Host Configuration Protocol for IPv6 (DHCPv6)
 
Authors:T. Mrugalski, B. Volz, M. Richardson, S. Jiang, T. Winters.
Date:January 2026
Formats:txt html pdf json xml
Obsoletes:RFC 8415
Also:STD 0102
Status:INTERNET STANDARD
DOI:10.17487/RFC 9915
This document specifies the Dynamic Host Configuration Protocol forIPv6 (DHCPv6), an extensible mechanism for configuring nodes with network configuration parameters, IP addresses, and prefixes.Parameters can be provided statelessly or in combination with stateful assignment of one or more IPv6 addresses and/or IPv6 prefixes. DHCPv6 can operate either in place of or in addition to stateless address autoconfiguration (SLAAC).

This document obsoletes RFC 8415. It incorporates verified errata and obsoletes the assignment of temporary addresses (the IA_TA option) and the server unicast capability (the Server Unicast option and UseMulticast status code).

 
RFC 9917 IGP Flexible Algorithms Reverse Affinity Constraint
 
Authors:P. Psenak, J. Horn, A. Dhamija.
Date:January 2026
Formats:txt json xml pdf html
Updates:RFC 9350, RFC 9843
Status:PROPOSED STANDARD
DOI:10.17487/RFC 9917
An IGP Flexible Algorithm (Flex-Algorithm) enables the computation of constraint-based paths within an IGP domain, allowing operators to influence path selection according to administrative policies. This document defines an extension to Flex-Algorithm that allows the inclusion or exclusion of links from path computation based onAdministrative Groups (also known as link affinities) associated with the reverse direction of the path under computation.

This document updates RFCs 9350 and 9843 by introducing the new IANA registry that specifies the ordered set of rules that are used to prune links from the topology during the Flex-Algorithm path computation.

 
RFC 9920 RFC Editor Model (Version 3)
 
Authors:P. Hoffman, A. Rossi.
Date:February 2026
Formats:txt html json pdf xml
Obsoletes:RFC 9280
Updates:RFC 7841, RFC 7991, RFC 7992, RFC 7993, RFC 7994, RFC 7995, RFC 7996, RFC 7997, RFC 8729, RFC 8730, RFC 9720
Status:INFORMATIONAL
DOI:10.17487/RFC 9920
This document specifies version 3 of the RFC Editor Model. The model defines two high-level tasks related to the RFC Series. First, policy definition is the joint responsibility of the RFC SeriesWorking Group (RSWG), which produces policy proposals, and the RFCSeries Approval Board (RSAB), which approves such proposals. Second, policy implementation is primarily the responsibility of the RFCProduction Center (RPC) as contractually overseen by the IETFAdministration Limited Liability Company (IETF LLC). In addition, various responsibilities of the RFC Editor function are now performed alone or in combination by the RSWG, RSAB, RPC, RFC Series ConsultingEditor (RSCE), and IETF LLC. Finally, this document specifies theEditorial Stream for publication of future policy definition documents produced through the processes defined herein.

Since the publication of RFC 9280, lessons have been learned about implementing this model. This document lists some of those lessons learned and updates RFC 9280 based on that experience. This document obsoletes RFC 9280.

This document updates RFCs 7841, 7991, 7992, 7993, 7994, 7995, 7996,7997, 8729, 8730, and 9720.

 
RFC 9921 CBOR Object Signing and Encryption (COSE) Header Parameter for Timestamp Tokens as Defined in RFC 3161
 
Authors:H. Birkholz, T. Fossati, M. Riechert.
Date:February 2026
Formats:txt html pdf json xml
Status:PROPOSED STANDARD
DOI:10.17487/RFC 9921
This document defines two CBOR Object Signing and Encryption (COSE) header parameters for incorporating timestamping based on RFC 3161 into COSE message structures (COSE_Sign and COSE_Sign1). This enables the use of established timestamping infrastructure per RFC3161 in COSE-based protocols.
 
RFC 9924 Advanced Professional Video
 
Authors:Y. Lim, M. Park, M. Budagavi, R. Joshi, K. Choi.
Date:February 2026
Formats:txt xml html pdf json
Status:INFORMATIONAL
DOI:10.17487/RFC 9924
This document describes the bitstream format of Advanced ProfessionalVideo (APV) and its decoding process. APV is a professional video codec providing visually lossless compression mainly for recording and post production.
 
RFC 9925 Unsigned X.509 Certificates
 
Authors:D. Benjamin.
Date:February 2026
Formats:txt xml html pdf json
Updates:RFC 5280
Status:PROPOSED STANDARD
DOI:10.17487/RFC 9925
This document defines a placeholder X.509 signature algorithm that may be used in contexts where the consumer of the certificate is not expected to verify the signature. As part of this, it updates RFC5280.
 
RFC 9926 Prefix Registration for IPv6 Neighbor Discovery
 
Authors:P. Thubert, Ed..
Date:February 2026
Formats:txt json pdf xml html
Updates:RFC 4861, RFC 6550, RFC 8505, RFC 8928, RFC 9010
Status:PROPOSED STANDARD
DOI:10.17487/RFC 9926
This document updates IPv6 Neighbor Discovery (RFC 4861) and IPv6Subnet Neighbor Discovery (RFC 8505, RFC 8928) to enable a node that owns or is directly connected to a prefix to register that prefix to neighbor routers. The registration indicates that the registered prefix can be reached via the advertising node without a loop. The unicast prefix registration allows the node to request one or more neighbor routers to redistribute the prefix in another routing domain regardless of the routing protocol used in that domain. This document updates the Routing Protocol for Low-Power and LossyNetworks (RPL), as specified in RFCs 6550 and 9010, to enable a6LoWPAN Router (6LR) to inject the registered prefix in RPL.
 
RFC 9927 Fixing the C-Flag in the Extended Address Registration Option (EARO)
 
Authors:P. Thubert, A. Rashid.
Date:February 2026
Formats:txt json html pdf xml
Updates:RFC 8928
Status:PROPOSED STANDARD
DOI:10.17487/RFC 9927
This document updates "Address-Protected Neighbor Discovery for Low-Power and Lossy Networks" (RFC 8928) by changing the position of theC-flag in the Extended Address Registration Option (EARO) and registering it with IANA.