Recent RFCs https://www.rfc-editor.org/ Recently published RFCs en-us Sat, 31 Jan 2026 14:07:28 -0800 RFC 9892: Dynamic Link Exchange Protocol (DLEP) Traffic Classification Data Item https://www.rfc-editor.org/info/rfc9892 This document defines a new Data Item for the Dynamic Link Exchange Protocol (DLEP) to support traffic classification. Traffic classification information identifies traffic flows based on frame/packet content such as a destination address. The Data Item is defined in an extensible and reusable fashion. Its use will be mandated in other documents defining specific DLEP extensions. This document also introduces DLEP Sub-Data Items and defines two new Sub-Data Items to support Diffserv and Ethernet traffic classification. RFC 9895: Dynamic Link Exchange Protocol (DLEP) IEEE 802.1Q Aware Credit Window Extension https://www.rfc-editor.org/info/rfc9895 This document defines an extension to the Dynamic Link Exchange Protocol (DLEP) that enables an Ethernet IEEE 802.1Q aware credit window scheme for destination-specific and shared flow control. RFC 9893: Dynamic Link Exchange Protocol (DLEP) Credit-Based Flow Control Messages and Data Items https://www.rfc-editor.org/info/rfc9893 This document defines new Dynamic Link Exchange Protocol (DLEP) Data Items that are used to support credit-based flow control. Credit window flow control is used to regulate when data may be sent to an associated virtual or physical queue. These Data Items are extensible and reusable. This document also defines new messages that support credit window flow control. RFC 9894: Dynamic Link Exchange Protocol (DLEP) Diffserv Aware Credit Window Extension https://www.rfc-editor.org/info/rfc9894 This document defines an extension to the Dynamic Link Exchange Protocol (DLEP) that enables a Diffserv aware credit window scheme for destination-specific and shared flow control. RFC 9880: Semantic Definition Format (SDF) for Data and Interactions of Things https://www.rfc-editor.org/info/rfc9880 The Semantic Definition Format (SDF) is a format for domain experts to use in the creation and maintenance of data and interaction models that describe Things, i.e., physical objects that are available for interaction over a network. An SDF specification describes definitions of SDF Objects/SDF Things and their associated interactions (Events, Actions, and Properties), as well as the Data types for the information exchanged in those interactions. Tools convert this format to database formats and other serializations as needed. RFC 9915: Dynamic Host Configuration Protocol for IPv6 (DHCPv6) https://www.rfc-editor.org/info/rfc9915 This document specifies the Dynamic Host Configuration Protocol for IPv6 (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 9896: SVG in RFCs https://www.rfc-editor.org/info/rfc9896 This document defines policy for the inclusion of Scalable Vector Graphics (SVG) in the definitive versions of RFCs and relevant publication formats. It contains policy requirements from RFC 7996 but removes all requirements related to using a specific SVG profile or implementation code. It also makes the RFC Production Center (RPC) responsible for decisions about SVG tooling and implementation. This document obsoletes RFC 7996. RFC 9917: IGP Flexible Algorithms Reverse Affinity Constraint https://www.rfc-editor.org/info/rfc9917 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 on Administrative 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 9897: Datagram Congestion Control Protocol (DCCP) Extensions for Multipath Operation with Multiple Addresses https://www.rfc-editor.org/info/rfc9897 Datagram Congestion Control Protocol (DCCP) communications, as defined in RFC 4340, are inherently restricted to a single path per connection, despite the availability of multiple network paths between peers. The ability to utilize multiple paths simultaneously for a DCCP session can enhance network resource utilization, improve throughput, and increase resilience to network failures, ultimately enhancing the user experience. Use cases for Multipath DCCP (MP-DCCP) include mobile devices (e.g., handsets and vehicles) and residential home gateways that maintain simultaneous connections to distinct network types such as cellular and Wireless Local Area Networks (WLANs) or cellular and fixed access networks. Compared to existing multipath transport protocols, such as Multipath TCP (MPTCP), MP-DCCP is particularly suited for latency-sensitive applications with varying requirements for reliability and in-order delivery. This document specifies a set of protocol extensions to DCCP that enable multipath operations. These extensions maintain the same service model as DCCP while introducing mechanisms to establish and utilize multiple concurrent DCCP flows across different network paths. RFC 9910: Registration Data Access Protocol (RDAP) Regional Internet Registry (RIR) Search https://www.rfc-editor.org/info/rfc9910 The Registration Data Access Protocol (RDAP) is used by Regional Internet 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, and Autonomous 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 9908: Clarification and Enhancement of the CSR Attributes Definition in RFC 7030 https://www.rfc-editor.org/info/rfc9908 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 Attributes Response. 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 subject Distinguished Name (DN). RFC 9847: IANA Registry Updates for TLS and DTLS https://www.rfc-editor.org/info/rfc9847 This document updates the changes to the TLS and DTLS IANA registries made in RFC 8447. It adds a new value, "D" for discouraged, to the "Recommended" column of the selected TLS registries and adds a "Comment" column to all active registries that do not already have a "Comment" column. Finally, it updates the registration request instructions. This document updates RFC 8447. RFC 9886: DRIP Entity Tags (DETs) in the Domain Name System https://www.rfc-editor.org/info/rfc9886 This document defines the Domain Name System (DNS) functionality of a Drone Remote Identification Protocol (DRIP) Identity Management Entity (DIME). It is built around DRIP Entity Tags (DETs) to standardize a hierarchical registry structure and associated processes to facilitate trustable and scalable registration and lookup of information related to Unmanned Aircraft Systems (UAS). The registry system supports issuance, discovery, and verification of DETs, enabling secure identification and association of UAS and their operators. It also defines the interactions between different classes of registries (root, organizational, and individual) and their respective roles in maintaining the integrity of the registration data. This architecture enables decentralized, federated operation while supporting privacy, traceability, and regulatory compliance requirements in the context of UAS Remote Identification and other services. RFC 9899: Extensions to the YANG Data Model for Access Control Lists (ACLs) https://www.rfc-editor.org/info/rfc9899 RFC 8519 defines a YANG data model for Access Control Lists (ACLs). This document specifies a set of extensions that fix many of the limitations of the ACL model as initially defined in RFC 8519. Specifically, it introduces augmentations to the ACL base model to enhance its functionality and applicability. This document also creates initial versions of IANA-maintained modules for ICMP types and IPv6 extension headers. RFC 9911: Common YANG Data Types https://www.rfc-editor.org/info/rfc9911 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.