RFC Abstracts

RFC7715 - Multipoint LDP (mLDP) Node Protection
This document describes procedures to support node protection for Point-to-Multipoint and Multipoint-to-Multipoint Label Switched Paths (P2MP and MP2MP LSPs) that have been built by the Multipoint Label Distribution Protocol (mLDP). In order to protect a node N, the Point of Local Repair (PLR) Label Switching Router (LSR) of N must learn the Merge Point (MPT) LSR(s) of node N such that traffic can be redirected to them in case node N fails. Redirecting the traffic around the failed node N depends on existing Point-to-Point (P2P) Label Switched Paths (LSPs). The pre-established LSPs originate from the PLR LSR and terminate on the MPT LSRs while bypassing LSR N.
RFC7714 - AES-GCM Authenticated Encryption in the Secure Real-time Transport Protocol (SRTP)
This document defines how the AES-GCM Authenticated Encryption with Associated Data family of algorithms can be used to provide confidentiality and data authentication in the Secure Real-time Transport Protocol (SRTP).
RFC7713 - Congestion Exposure (ConEx) Concepts, Abstract Mechanism, and Requirements
This document describes an abstract mechanism by which senders inform the network about the congestion recently encountered by packets in the same flow. Today, network elements at any layer may signal congestion to the receiver by dropping packets or by Explicit Congestion Notification (ECN) markings, and the receiver passes this information back to the sender in transport-layer feedback. The mechanism described here enables the sender to also relay this congestion information back into the network in-band at the IP layer, such that the total amount of congestion from all elements on the path is revealed to all IP elements along the path, where it could, for example, be used to provide input to traffic management. This mechanism is called Congestion Exposure, or ConEx. The companion document, "Congestion Exposure (ConEx) Concepts and Use Cases" (RFC 6789), provides the entry point to the set of ConEx documentation.
RFC7712 - Domain Name Associations (DNA) in the Extensible Messaging and Presence Protocol (XMPP)
This document improves the security of the Extensible Messaging and Presence Protocol (XMPP) in two ways. First, it specifies how to establish a strong association between a domain name and an XML stream, using the concept of "prooftypes". Second, it describes how to securely delegate a service domain name (e.g., example.com) to a target server hostname (e.g., hosting.example.net); this is especially important in multi-tenanted environments where the same target server hosts a large number of domains.
RFC7711 - PKIX over Secure HTTP (POSH)
Experience has shown that it is difficult to deploy proper PKIX certificates for Transport Layer Security (TLS) in multi-tenanted environments. As a result, domains hosted in such environments often deploy applications using certificates that identify the hosting service, not the hosted domain. Such deployments force end users and peer services to accept a certificate with an improper identifier, resulting in degraded security. This document defines methods that make it easier to deploy certificates for proper server identity checking in non-HTTP application protocols. Although these methods were developed for use in the Extensible Messaging and Presence Protocol (XMPP) as a Domain Name Association (DNA) prooftype, they might also be usable in other non-HTTP application protocols.
RFC7710 - Captive-Portal Identification Using DHCP or Router Advertisements (RAs)
In many environments offering short-term or temporary Internet access (such as coffee shops), it is common to start new connections in a captive-portal mode. This highly restricts what the customer can do until the customer has authenticated.
RFC7709 - Requirements for Very Fast Setup of GMPLS Label Switched Paths (LSPs)
Establishment and control of Label Switch Paths (LSPs) have become mainstream tools of commercial and government network providers. One of the elements of further evolving such networks is scaling their performance in terms of LSP bandwidth and traffic loads, LSP intensity (e.g., rate of LSP creation, deletion, and modification), LSP set up delay, quality-of-service differentiation, and different levels of resilience.
RFC7708 - Using a Generic Associated Channel Label as a Virtual Circuit Connectivity Verification Channel Indicator
The Virtual Circuit Connectivity Verification (VCCV) protocol specified in RFC 5085 provides a control channel (CC) that is associated with a pseudowire (PW). This document specifies an additional VCCV control channel type to be used with pseudowires that do not use the PW Control Word and that are carried over an MPLS network. This new VCCV CC type uses the Generic Associated Channel Label defined in RFC 5586 to distinguish VCCV packets from packets carrying user data. This new VCCV CC type introduces compatibility with the method of MPLS Label Switched Path Operations, Administration, and Maintenance (OAM) identification, particularly in MPLS Transport Profile (MPLS-TP) networks (RFC 5921).
RFC7707 - Network Reconnaissance in IPv6 Networks
IPv6 offers a much larger address space than that of its IPv4 counterpart. An IPv6 subnet of size /64 can (in theory) accommodate approximately 1.844 * 10^19 hosts, thus resulting in a much lower host density (#hosts/#addresses) than is typical in IPv4 networks, where a site typically has 65,000 or fewer unique addresses. As a result, it is widely assumed that it would take a tremendous effort to perform address-scanning attacks against IPv6 networks; therefore, IPv6 address-scanning attacks have been considered unfeasible. This document formally obsoletes RFC 5157, which first discussed this assumption, by providing further analysis on how traditional address-scanning techniques apply to IPv6 networks and exploring some additional techniques that can be employed for IPv6 network reconnaissance.
RFC7706 - Decreasing Access Time to Root Servers by Running One on Loopback
Some DNS recursive resolvers have longer-than-desired round-trip times to the closest DNS root server. Some DNS recursive resolver operators want to prevent snooping of requests sent to DNS root servers by third parties. Such resolvers can greatly decrease the round-trip time and prevent observation of requests by running a copy of the full root zone on a loopback address (such as This document shows how to start and maintain such a copy of the root zone that does not pose a threat to other users of the DNS, at the cost of adding some operational fragility for the operator.
RFC7705 - Autonomous System Migration Mechanisms and Their Effects on the BGP AS_PATH Attribute
This document discusses some existing commonly used BGP mechanisms for Autonomous System Number (ASN) migration that are not formally part of the BGP4 protocol specification. It is necessary to document these de facto standards to ensure that they are properly supported in future BGP protocol work.
RFC7704 - An IETF with Much Diversity and Professional Conduct
The process of producing today's Internet technologies through a culture of open participation and diverse collaboration has proved strikingly efficient and effective, and it is distinctive among standards organizations. During the early years of the IETF and its antecedent, participation was almost entirely composed of a small group of well-funded, American, white, male technicians, demonstrating a distinctive and challenging group dynamic, both in management and in personal interactions. In the case of the IETF, interaction style can often contain singularly aggressive behavior, often including singularly hostile tone and content. Groups with greater diversity make better decisions. Obtaining meaningful diversity requires more than generic good will and statements of principle. Many different behaviors can serve to reduce participant diversity or participation diversity. This document discusses IETF participation in terms of the nature of diversity and practical issues that can increase or decrease it. The document represents the authors' assessments and recommendations, following general discussions of the issues in the IETF.
RFC7703 - Experience with Testing of Mapping of Address and Port Using Translation (MAP-T)
This document describes the testing result of a network utilizing a Mapping of Address and Port using Translation (MAP-T) double translation solution; it provides an overview of user applications' behavior with a shared IPv4 address.
RFC7702 - Interworking between the Session Initiation Protocol (SIP) and the Extensible Messaging and Presence Protocol (XMPP): Groupchat
This document defines a bidirectional protocol mapping for the exchange of instant messages in the context of a multi-party chat session among users of the Session Initiation Protocol (SIP) and users of the Extensible Messaging and Presence Protocol (XMPP). Specifically, this document defines a mapping between the SIP-based Message Session Relay Protocol (MSRP) and the XMPP Multi-User Chat (MUC) extension.
RFC7701 - Multi-party Chat Using the Message Session Relay Protocol (MSRP)
The Message Session Relay Protocol (MSRP) defines a mechanism for sending instant messages (IMs) within a peer-to-peer session, negotiated using the Session Initiation Protocol (SIP) and the Session Description Protocol (SDP). This document defines the necessary tools for establishing multi-party chat sessions, or chat rooms, using MSRP.
RFC7700 - Preparation, Enforcement, and Comparison of Internationalized Strings Representing Nicknames
This document describes methods for handling Unicode strings representing memorable, human-friendly names (called "nicknames", "display names", or "petnames") for people, devices, accounts, websites, and other entities.
RFC7699 - Generalized Labels for the Flexi-Grid in Lambda Switch Capable (LSC) Label Switching Routers
GMPLS supports the description of optical switching by identifying entries in fixed lists of switchable wavelengths (called grids) through the encoding of lambda labels. Work within the ITU-T Study Group 15 has defined a finer-granularity grid, and the facility to flexibly select different widths of spectrum from the grid. This document defines a new GMPLS lambda label format to support this flexi-grid.
RFC7698 - Framework and Requirements for GMPLS-Based Control of Flexi-Grid Dense Wavelength Division Multiplexing (DWDM) Networks
To allow efficient allocation of optical spectral bandwidth for systems that have high bit-rates, the International Telecommunication Union Telecommunication Standardization Sector (ITU-T) has extended its Recommendations G.694.1 and G.872 to include a new Dense Wavelength Division Multiplexing (DWDM) grid by defining a set of nominal central frequencies, channel spacings, and the concept of the "frequency slot". In such an environment, a data-plane connection is switched based on allocated, variable-sized frequency ranges within the optical spectrum, creating what is known as a flexible grid (flexi-grid).
RFC7697 - MPLS Transport Profile (MPLS-TP) Operations, Administration, and Maintenance (OAM) Identifiers Management Information Base (MIB)
This memo defines a portion of the Management Information Base (MIB) for use with network management protocols in the Internet community. In particular, it describes managed objects to configure the Operations, Administration, and Maintenance (OAM) identifiers for Multiprotocol Label Switching (MPLS) and the MPLS-based Transport Profile (TP).
RFC7696 - Guidelines for Cryptographic Algorithm Agility and Selecting Mandatory-to-Implement Algorithms
Many IETF protocols use cryptographic algorithms to provide confidentiality, integrity, authentication, or digital signature. Communicating peers must support a common set of cryptographic algorithms for these mechanisms to work properly. This memo provides guidelines to ensure that protocols have the ability to migrate from one mandatory-to-implement algorithm suite to another over time.
RFC7695 - Distributed Prefix Assignment Algorithm
This document specifies a distributed algorithm for dividing a set of prefixes in a manner that allows for automatic assignment of sub-prefixes that are unique and non-overlapping. Used in conjunction with a protocol that provides flooding of information among a set of participating nodes, prefix configuration within a network may be automated.
RFC7694 - Hypertext Transfer Protocol (HTTP) Client-Initiated Content-Encoding
In HTTP, content codings allow for payload encodings such as for compression or integrity checks. In particular, the "gzip" content coding is widely used for payload data sent in response messages.
RFC7693 - The BLAKE2 Cryptographic Hash and Message Authentication Code (MAC)
This document describes the cryptographic hash function BLAKE2 and makes the algorithm specification and C source code conveniently available to the Internet community. BLAKE2 comes in two main flavors: BLAKE2b is optimized for 64-bit platforms and BLAKE2s for smaller architectures. BLAKE2 can be directly keyed, making it functionally equivalent to a Message Authentication Code (MAC).
RFC7692 - Compression Extensions for WebSocket
This document defines a framework for creating WebSocket extensions that add compression functionality to the WebSocket Protocol. An extension based on this framework compresses the payload data portion of WebSocket data messages on a per-message basis using parameters negotiated during the opening handshake. This framework provides a general method for applying a compression algorithm to the contents of WebSocket messages. Each compression algorithm has to be defined in a document defining the extension by specifying the parameter negotiation and the payload transformation algorithm in detail. This document also specifies one specific compression extension using the DEFLATE algorithm.
RFC7691 - Updating the Term Dates of IETF Administrative Oversight Committee (IAOC) Members
BCP 101 defines the start and end dates for the terms of IETF Administrative Oversight Committee (IAOC) members; these terms have proven to be impractical. This memo updates BCP 101 to direct the IAOC to establish more practical start and end dates for terms of IAOC members.
RFC7690 - Close Encounters of the ICMP Type 2 Kind (Near Misses with ICMPv6 Packet Too Big (PTB))
This document calls attention to the problem of delivering ICMPv6 type 2 "Packet Too Big" (PTB) messages to the intended destination (typically the server) in ECMP load-balanced or anycast network architectures. It discusses operational mitigations that can be employed to address this class of failures.
RFC7689 - Signaling Extensions for Wavelength Switched Optical Networks
This document provides extensions to Generalized Multiprotocol Label Switching (GMPLS) signaling for control of Wavelength Switched Optical Networks (WSONs). Such extensions are applicable in WSONs under a number of conditions including: (a) when optional processing, such as regeneration, must be configured to occur at specific nodes along a path, (b) where equipment must be configured to accept an optical signal with specific attributes, or (c) where equipment must be configured to output an optical signal with specific attributes. This document provides mechanisms to support distributed wavelength assignment with a choice of distributed wavelength assignment algorithms.
RFC7688 - GMPLS OSPF Enhancement for Signal and Network Element Compatibility for Wavelength Switched Optical Networks
This document provides Generalized Multiprotocol Label Switching (GMPLS) Open Shortest Path First (OSPF) routing enhancements to support signal compatibility constraints associated with Wavelength Switched Optical Network (WSON) elements. These routing enhancements are applicable in common optical or hybrid electro-optical networks where not all the optical signals in the network are compatible with all network elements participating in the network.
RFC7687 - Report from the Strengthening the Internet (STRINT) Workshop
The Strengthening the Internet (STRINT) workshop assembled one hundred participants in London for two days in early 2014 to discuss how the technical community, and in particular the IETF and the W3C, should react to Pervasive Monitoring and more generally how to strengthen the Internet in the face of such attacks. The discussions covered issues of terminology, the role of user interfaces, classes of mitigation, some specific use cases, transition strategies (including opportunistic encryption), and more. The workshop ended with a few high-level recommendations, that it is believed could be implemented and could help strengthen the Internet. This is the report of that workshop.
RFC7686 - The ".onion" Special-Use Domain Name
This document registers the ".onion" Special-Use Domain Name.
RFC7685 - A Transport Layer Security (TLS) ClientHello Padding Extension
This memo describes a Transport Layer Security (TLS) extension that can be used to pad ClientHello messages to a desired size.
RFC7684 - OSPFv2 Prefix/Link Attribute Advertisement
OSPFv2 requires functional extension beyond what can readily be done with the fixed-format Link State Advertisements (LSAs) as described in RFC 2328. This document defines OSPFv2 Opaque LSAs based on Type-Length-Value (TLV) tuples that can be used to associate additional attributes with prefixes or links. Depending on the application, these prefixes and links may or may not be advertised in the fixed-format LSAs. The OSPFv2 Opaque LSAs are optional and fully backward compatible.
RFC7683 - Diameter Overload Indication Conveyance
This specification defines a base solution for Diameter overload control, referred to as Diameter Overload Indication Conveyance (DOIC).
RFC7682 - Considerations for Internet Routing Registries (IRRs) and Routing Policy Configuration
The purpose of this document is to catalog issues that influenced the efficacy of Internet Routing Registries (IRRs) for inter-domain routing policy specification and application in the global routing system over the past two decades. Additionally, it provides a discussion regarding which of these issues are still problematic in practice, and which are simply artifacts that are no longer applicable but continue to stifle inter-provider policy-based filtering adoption and IRR utility to this day.
RFC7681 - Email Exchange of Secondary School Transcripts
A common format simplifies exchange of secondary school academic transcripts via electronic mail. Existing standards are applied to prevent unauthorized alteration of transcript content and to deliver transcripts directly and securely from each student to his or her chosen recipients. By eliminating third-party intervention and surveillance, the defined protocol better protects student privacy and independence than does current practice.
RFC7680 - A One-Way Loss Metric for IP Performance Metrics (IPPM)
This memo defines a metric for one-way loss of packets across Internet paths. It builds on notions introduced and discussed in the IP Performance Metrics (IPPM) Framework document, RFC 2330; the reader is assumed to be familiar with that document. This memo makes RFC 2680 obsolete.
RFC7679 - A One-Way Delay Metric for IP Performance Metrics (IPPM)
This memo defines a metric for one-way delay of packets across Internet paths. It builds on notions introduced and discussed in the IP Performance Metrics (IPPM) Framework document, RFC 2330; the reader is assumed to be familiar with that document. This memo makes RFC 2679 obsolete.
RFC7678 - Attribute-Value Pairs for Provisioning Customer Equipment Supporting IPv4-Over-IPv6 Transitional Solutions
During the transition from IPv4 to IPv6, customer equipment may have to support one of the various transition methods that have been defined for carrying IPv4 packets over IPv6. This document enumerates the information that needs to be provisioned on a customer edge router to support a list of transition techniques based on tunneling IPv4 in IPv6, with a view to defining reusable components for a reasonable transition path between these techniques. To the extent that the provisioning is done dynamically, Authentication, Authorization, and Accounting (AAA) support is needed to provide the information to the network server responsible for passing the information to the customer equipment. This document specifies Diameter (RFC 6733) Attribute-Value Pairs (AVPs) to be used for that purpose.
RFC7677 - SCRAM-SHA-256 and SCRAM-SHA-256-PLUS Simple Authentication and Security Layer (SASL) Mechanisms
This document registers the Simple Authentication and Security Layer (SASL) mechanisms SCRAM-SHA-256 and SCRAM-SHA-256-PLUS, provides guidance for secure implementation of the original SCRAM-SHA-1-PLUS mechanism, and updates the SCRAM registration procedures of RFC 5802.
RFC7676 - IPv6 Support for Generic Routing Encapsulation (GRE)
Generic Routing Encapsulation (GRE) can be used to carry any network- layer payload protocol over any network-layer delivery protocol. Currently, GRE procedures are specified for IPv4, used as either the payload or delivery protocol. However, GRE procedures are not specified for IPv6.
RFC7675 - Session Traversal Utilities for NAT (STUN) Usage for Consent Freshness
To prevent WebRTC applications, such as browsers, from launching attacks by sending traffic to unwilling victims, periodic consent to send needs to be obtained from remote endpoints.
RFC7674 - Clarification of the Flowspec Redirect Extended Community
This document updates RFC 5575 ("Dissemination of Flow Specification Rules") to clarify the formatting of the BGP Flowspec Redirect Extended Community.
RFC7673 - Using DNS-Based Authentication of Named Entities (DANE) TLSA Records with SRV Records
The DNS-Based Authentication of Named Entities (DANE) specification (RFC 6698) describes how to use TLSA resource records secured by DNSSEC (RFC 4033) to associate a server's connection endpoint with its Transport Layer Security (TLS) certificate (thus enabling administrators of domain names to specify the keys used in that domain's TLS servers). However, application protocols that use SRV records (RFC 2782) to indirectly name the target server connection endpoints for a service domain name cannot apply the rules from RFC 6698. Therefore, this document provides guidelines that enable such protocols to locate and use TLSA records.
RFC7672 - SMTP Security via Opportunistic DNS-Based Authentication of Named Entities (DANE) Transport Layer Security (TLS)
This memo describes a downgrade-resistant protocol for SMTP transport security between Message Transfer Agents (MTAs), based on the DNS-Based Authentication of Named Entities (DANE) TLSA DNS record. Adoption of this protocol enables an incremental transition of the Internet email backbone to one using encrypted and authenticated Transport Layer Security (TLS).
RFC7671 - The DNS-Based Authentication of Named Entities (DANE) Protocol: Updates and Operational Guidance
This document clarifies and updates the DNS-Based Authentication of Named Entities (DANE) TLSA specification (RFC 6698), based on subsequent implementation experience. It also contains guidance for implementers, operators, and protocol developers who want to use DANE records.
RFC7670 - Generic Raw Public-Key Support for IKEv2
The Internet Key Exchange Version 2 (IKEv2) protocol did have support for raw public keys, but it only supported RSA raw public keys. In constrained environments, it is useful to make use of other types of public keys, such as those based on Elliptic Curve Cryptography. This document updates RFC 7296, adding support for other types of raw public keys to IKEv2.
RFC7669 - Assigning Digital Object Identifiers to RFCs
This document describes the way that Digital Object Identifiers (DOIs) are assigned to past and future RFCs. The DOI is a widely used system that assigns unique identifiers to digital documents that can be queried and managed in a consistent fashion.
RFC7668 - IPv6 over BLUETOOTH(R) Low Energy
Bluetooth Smart is the brand name for the Bluetooth low energy feature in the Bluetooth specification defined by the Bluetooth Special Interest Group. The standard Bluetooth radio has been widely implemented and available in mobile phones, notebook computers, audio headsets, and many other devices. The low-power version of Bluetooth is a specification that enables the use of this air interface with devices such as sensors, smart meters, appliances, etc. The low-power variant of Bluetooth has been standardized since revision 4.0 of the Bluetooth specifications, although version 4.1 or newer is required for IPv6. This document describes how IPv6 is transported over Bluetooth low energy using IPv6 over Low-power Wireless Personal Area Network (6LoWPAN) techniques.
RFC7667 - RTP Topologies
This document discusses point-to-point and multi-endpoint topologies used in environments based on the Real-time Transport Protocol (RTP). In particular, centralized topologies commonly employed in the video conferencing industry are mapped to the RTP terminology.
RFC7666 - Management Information Base for Virtual Machines Controlled by a Hypervisor
This document defines a portion of the Management Information Base (MIB) for use with network management protocols in the Internet community. In particular, this specifies objects for managing virtual machines controlled by a hypervisor (a.k.a. virtual machine monitor).