RFC Abstracts
RFC6306 - Hierarchical IPv4 Framework
This document describes a framework for how the current IPv4 address space can be divided into two new address categories: a core address space (Area Locators, ALOCs) that is globally unique, and an edge address space (Endpoint Locators, ELOCs) that is regionally unique. In the future, the ELOC space will only be significant in a private network or in a service provider domain. Therefore, a 32x32 bit addressing scheme and a hierarchical routing architecture are achieved. The hierarchical IPv4 framework is backwards compatible with the current IPv4 Internet.
RFC6305 - I'm Being Attacked by PRISONER.IANA.ORG!
Many sites connected to the Internet make use of IPv4 addresses that are not globally unique. Examples are the addresses designated in RFC 1918 for private use within individual sites.
RFC6304 - AS112 Nameserver Operations
Many sites connected to the Internet make use of IPv4 addresses that are not globally unique. Examples are the addresses designated in RFC 1918 for private use within individual sites.
RFC6303 - Locally Served DNS Zones
Experience with the Domain Name System (DNS) has shown that there are a number of DNS zones that all iterative resolvers and recursive nameservers should automatically serve, unless configured otherwise. RFC 4193 specifies that this should occur for D.F.IP6.ARPA. This document extends the practice to cover the IN-ADDR.ARPA zones for RFC 1918 address space and other well-known zones with similar characteristics. This memo documents an Internet Best Current Practice.
RFC6302 - Logging Recommendations for Internet-Facing Servers
In the wake of IPv4 exhaustion and deployment of IP address sharing techniques, this document recommends that Internet-facing servers log port number and accurate timestamps in addition to the incoming IP address. This memo documents an Internet Best Current Practice.
RFC6301 - A Survey of Mobility Support in the Internet
Over the last two decades, many efforts have been devoted to developing solutions for mobility support over the global Internet, resulting in a variety of proposed solutions. We conducted a systematic survey of the previous efforts to gain an overall understanding on the solution space of mobility support. This document reports our findings and identifies remaining issues in providing ubiquitous and efficient Internet mobility support on a global scale. This document is not an Internet Standards Track specification; it is published for informational purposes.
RFC6298 - Computing TCP's Retransmission Timer
This document defines the standard algorithm that Transmission Control Protocol (TCP) senders are required to use to compute and manage their retransmission timer. It expands on the discussion in Section 4.2.3.1 of RFC 1122 and upgrades the requirement of supporting the algorithm from a SHOULD to a MUST. This document obsoletes RFC 2988. [STANDARDS-TRACK]
RFC6297 - A Survey of Lower-than-Best-Effort Transport Protocols
This document provides a survey of transport protocols that are designed to have a smaller bandwidth and/or delay impact on standard TCP than standard TCP itself when they share a bottleneck with it. Such protocols could be used for delay-insensitive "background" traffic, as they provide what is sometimes called a "less than" (or "lower than") best-effort service. This document is not an Internet Standards Track specification; it is published for informational purposes.
RFC6296 - IPv6-to-IPv6 Network Prefix Translation
This document describes a stateless, transport-agnostic IPv6-to-IPv6 Network Prefix Translation (NPTv6) function that provides the address-independence benefit associated with IPv4-to-IPv4 NAT (NAPT44) and provides a 1:1 relationship between addresses in the "inside" and "outside" prefixes, preserving end-to-end reachability at the network layer. This document defines an Experimental Protocol for the Internet community.
RFC6295 - RTP Payload Format for MIDI
This memo describes a Real-time Transport Protocol (RTP) payload format for the MIDI (Musical Instrument Digital Interface) command language. The format encodes all commands that may legally appear on a MIDI 1.0 DIN cable. The format is suitable for interactive applications (such as network musical performance) and content-delivery applications (such as file streaming). The format may be used over unicast and multicast UDP and TCP, and it defines tools for graceful recovery from packet loss. Stream behavior, including the MIDI rendering method, may be customized during session setup. The format also serves as a mode for the mpeg4-generic format, to support the MPEG 4 Audio Object Types for General MIDI, Downloadable Sounds Level 2, and Structured Audio. This document obsoletes RFC 4695. [STANDARDS-TRACK]
RFC6294 - Survey of Proposed Use Cases for the IPv6 Flow Label
The IPv6 protocol includes a flow label in every packet header, but this field is not used in practice. This paper describes the flow label standard and discusses the implementation issues that it raises. It then describes various published proposals for using the flow label and shows that most of them are inconsistent with the standard. Methods to address this problem are briefly reviewed. We also question whether the standard should be revised. This document is not an Internet Standards Track specification; it is published for informational purposes.
RFC6293 - Requirements for Internet-Draft Tracking by the IETF Community in the Datatracker
The document gives a set of requirements for extending the IETF Datatracker to give individual IETF community members, including the IETF leadership, easy methods for tracking the progress of the Internet-Drafts and RFCs of interest to them. This document is not an Internet Standards Track specification; it is published for informational purposes.
RFC6292 - Requirements for a Working Group Charter Tool
The IETF intends to provide a new tool to Area Directors for the creation, re-chartering, and closing of Working Groups. The tool will also allow the IETF community to view the status of the chartering process. This document describes the requirements for the proposed new tool, and it is intended as input to a later activity for the design and development of such a tool. This document is not an Internet Standards Track specification; it is published for informational purposes.
RFC6291 - Guidelines for the Use of the "OAM" Acronym in the IETF
At first glance, the acronym "OAM" seems to be well-known and well-understood. Looking at the acronym a bit more closely reveals a set of recurring problems that are revisited time and again.
RFC6290 - A Quick Crash Detection Method for the Internet Key Exchange Protocol (IKE)
This document describes an extension to the Internet Key Exchange Protocol version 2 (IKEv2) that allows for faster detection of Security Association (SA) desynchronization using a saved token.
RFC6289 - A Uniform Resource Name (URN) Namespace for CableLabs
This document describes the Namespace Identifier (NID) 'cablelabs' for Uniform Resource Names (URNs) used to identify resources published by Cable Television Laboratories, Inc. (CableLabs). CableLabs specifies and manages resources that utilize this URN identification model. Management activities for these and other resource types are handled by the manager of the CableLabs' Assigned Names and Numbers registry. This document is not an Internet Standards Track specification; it is published for informational purposes.
RFC6288 - URN Namespace for the Defence Geospatial Information Working Group (DGIWG)
This document describes the Namespace Identifier (NID) for Uniform Resource Name (URN) Namespace resources published by the Defence Geospatial Information Working Group (DGIWG). The DGIWG defines and manages resources that utilize this URN name model.
RFC6287 - OCRA: OATH Challenge-Response Algorithm
This document describes an algorithm for challenge-response authentication developed by the Initiative for Open Authentication (OATH). The specified mechanisms leverage the HMAC-based One-Time Password (HOTP) algorithm and offer one-way and mutual authentication, and electronic signature capabilities. This document is not an Internet Standards Track specification; it is published for informational purposes.
RFC6286 - Autonomous-System-Wide Unique BGP Identifier for BGP-4
To accommodate situations where the current requirements for the BGP Identifier are not met, this document relaxes the definition of the BGP Identifier to be a 4-octet, unsigned, non-zero integer and relaxes the "uniqueness" requirement so that only Autonomous-System-wide (AS-wide) uniqueness of the BGP Identifiers is required. These revisions to the base BGP specification do not introduce any backward compatibility issues. This document updates RFC 4271. [STANDARDS-TRACK]
RFC6285 - Unicast-Based Rapid Acquisition of Multicast RTP Sessions
When an RTP receiver joins a multicast session, it may need to acquire and parse certain Reference Information before it can process any data sent in the multicast session. Depending on the join time, length of the Reference Information repetition (or appearance) interval, size of the Reference Information, and the application and transport properties, the time lag before an RTP receiver can usefully consume the multicast data, which we refer to as the Acquisition Delay, varies and can be large. This is an undesirable phenomenon for receivers that frequently switch among different multicast sessions, such as video broadcasts.
RFC6284 - Port Mapping between Unicast and Multicast RTP Sessions
This document presents a port mapping solution that allows RTP receivers to choose their own ports for an auxiliary unicast session in RTP applications using both unicast and multicast services. The solution provides protection against denial-of-service or packet amplification attacks that could be used to cause one or more RTP packets to be sent to a victim client. [STANDARDS-TRACK]
RFC6283 - Extensible Markup Language Evidence Record Syntax (XMLERS)
In many scenarios, users must be able to demonstrate the (time of) existence, integrity, and validity of data including signed data for long or undetermined periods of time. This document specifies XML syntax and processing rules for creating evidence for long-term non- repudiation of existence and integrity of data. The Extensible Markup Language Evidence Record Syntax XMLERS provides alternative syntax and processing rules to the ASN.1 (Abstract Syntax Notation One) ERS (Evidence Record Syntax) (RFC 4998) syntax by using XML. [STANDARDS-TRACK]
RFC6282 - Compression Format for IPv6 Datagrams over IEEE 802.15.4-Based Networks
This document updates RFC 4944, "Transmission of IPv6 Packets over IEEE 802.15.4 Networks". This document specifies an IPv6 header compression format for IPv6 packet delivery in Low Power Wireless Personal Area Networks (6LoWPANs). The compression format relies on shared context to allow compression of arbitrary prefixes. How the information is maintained in that shared context is out of scope. This document specifies compression of multicast addresses and a framework for compressing next headers. UDP header compression is specified within this framework. [STANDARDS-TRACK]
RFC6281 - Understanding Apple's Back to My Mac (BTMM) Service
This document describes the implementation of Apple Inc.'s Back to My Mac (BTMM) service. BTMM provides network connectivity between devices so that a user can perform file sharing and screen sharing among multiple computers at home, at work, or on the road. The implementation of BTMM addresses the issues of single sign-on authentication, secure data communication, service discovery, and end-to-end connectivity in the face of Network Address Translators (NATs) and mobility of devices. This document is not an Internet Standards Track specification; it is published for informational purposes.
RFC6280 - An Architecture for Location and Location Privacy in Internet Applications
Location-based services (such as navigation applications, emergency services, and management of equipment in the field) need geographic location information about Internet hosts, their users, and other related entities. These applications need to securely gather and transfer location information for location services, and at the same time protect the privacy of the individuals involved. This document describes an architecture for privacy-preserving location-based services in the Internet, focusing on authorization, security, and privacy requirements for the data formats and protocols used by these services. This memo documents an Internet Best Current Practice.
RFC6279 - Proxy Mobile IPv6 (PMIPv6) Localized Routing Problem Statement
Proxy Mobile IPv6 is the IETF Standard for network-based mobility management. In Proxy Mobile IPv6, mobile nodes are topologically anchored at a Local Mobility Anchor, which forwards all data for registered mobile nodes. The setup and maintenance of localized routing, which allows forwarding of data packets between two mobile nodes' Mobility Access Gateways without involvement of their Local Mobility Anchor in forwarding, is not considered. This document describes the problem space of localized routing in Proxy Mobile IPv6. This document is not an Internet Standards Track specification; it is published for informational purposes.
RFC6278 - Use of Static-Static Elliptic Curve Diffie-Hellman Key Agreement in Cryptographic Message Syntax
This document describes how to use the 'static-static Elliptic Curve Diffie-Hellman key-agreement scheme (i.e., Elliptic Curve Diffie- Hellman where both participants use static Diffie-Hellman values) with the Cryptographic Message Syntax. In this form of key agreement, the Diffie-Hellman values of both the sender and receiver are long-term values contained in certificates. This document is not an Internet Standards Track specification; it is published for informational purposes.
RFC6277 - Online Certificate Status Protocol Algorithm Agility
The Online Certificate Status Protocol (OCSP) requires server responses to be signed but does not specify a mechanism for selecting the signature algorithm to be used. This may lead to avoidable interoperability failures in contexts where multiple signature algorithms are in use. This document specifies rules for server signature algorithm selection and an extension that allows a client to advise a server that specific signature algorithms are supported. [STANDARDS-TRACK]
RFC6276 - DHCPv6 Prefix Delegation for Network Mobility (NEMO)
One aspect of network mobility support is the assignment of a prefix or prefixes to a mobile router for use on the links in the mobile network. This document specifies how DHCPv6 prefix delegation can be used for this configuration task. The mobile router plays the role of requesting router, while the home agent assumes the role of delegating router. When the mobile router is outside its home network, the mobile router also assumes the role of DHCPv6 relay agent, co-located with the requesting router function. [STANDARDS-TRACK]
RFC6275 - Mobility Support in IPv6
This document specifies Mobile IPv6, a protocol that allows nodes to remain reachable while moving around in the IPv6 Internet. Each mobile node is always identified by its home address, regardless of its current point of attachment to the Internet. While situated away from its home, a mobile node is also associated with a care-of address, which provides information about the mobile node's current location. IPv6 packets addressed to a mobile node's home address are transparently routed to its care-of address. The protocol enables IPv6 nodes to cache the binding of a mobile node's home address with its care-of address, and to then send any packets destined for the mobile node directly to it at this care-of address. To support this operation, Mobile IPv6 defines a new IPv6 protocol and a new destination option. All IPv6 nodes, whether mobile or stationary, can communicate with mobile nodes. This document obsoletes RFC 3775. [STANDARDS-TRACK]
RFC6274 - Security Assessment of the Internet Protocol Version 4
This document contains a security assessment of the IETF specifications of the Internet Protocol version 4 and of a number of mechanisms and policies in use by popular IPv4 implementations. It is based on the results of a project carried out by the UK's Centre for the Protection of National Infrastructure (CPNI). This document is not an Internet Standards Track specification; it is published for informational purposes.
RFC6273 - The Secure Neighbor Discovery (SEND) Hash Threat Analysis
This document analyzes the use of hashes in Secure Neighbor Discovery (SEND), the possible threats to these hashes and the impact of recent attacks on hash functions used by SEND. The SEND specification currently uses the SHA-1 hash algorithm and PKIX certificates and does not provide support for hash algorithm agility. This document provides an analysis of possible threats to the hash algorithms used in SEND. This document is not an Internet Standards Track specification; it is published for informational purposes.
RFC6272 - Internet Protocols for the Smart Grid
This note identifies the key infrastructure protocols of the Internet Protocol Suite for use in the Smart Grid. The target audience is those people seeking guidance on how to construct an appropriate Internet Protocol Suite profile for the Smart Grid. In practice, such a profile would consist of selecting what is needed for Smart Grid deployment from the picture presented here. This document is not an Internet Standards Track specification; it is published for informational purposes.
RFC6271 - Requirements for SIP-Based Session Peering
This memo captures protocol requirements to enable session peering of voice, presence, instant messaging, and other types of multimedia traffic. This informational document is intended to link the various use cases described for session peering to protocol solutions. This document is not an Internet Standards Track specification; it is published for informational purposes.
RFC6270 - The 'tn3270' URI Scheme
This document is the specification of the 'tn3270' Uniform Resource Identifier (URI) scheme, which is used to designate the access to the resources available via Telnet 3270 mode (TN3270) and Telnet 3270 Enhanced mode (TN3270E). It updates RFC 1041 and RFC 2355, which specify these protocols, and RFC 1738, which firstly mentioned this URI scheme without defining its syntax and semantics. [STANDARDS-TRACK]
RFC6269 - Issues with IP Address Sharing
The completion of IPv4 address allocations from IANA and the Regional Internet Registries (RIRs) is causing service providers around the world to question how they will continue providing IPv4 connectivity service to their subscribers when there are no longer sufficient IPv4 addresses to allocate them one per subscriber. Several possible solutions to this problem are now emerging based around the idea of shared IPv4 addressing. These solutions give rise to a number of issues, and this memo identifies those common to all such address sharing approaches. Such issues include application failures, additional service monitoring complexity, new security vulnerabilities, and so on. Solution-specific discussions are out of scope.
RFC6268 - Additional New ASN.1 Modules for the Cryptographic Message Syntax (CMS) and the Public Key Infrastructure Using X.509 (PKIX)
The Cryptographic Message Syntax (CMS) format, and many associated formats, are expressed using ASN.1. The current ASN.1 modules conform to the 1988 version of ASN.1. This document updates some auxiliary ASN.1 modules to conform to the 2008 version of ASN.1; the 1988 ASN.1 modules remain the normative version. There are no bits- on-the-wire changes to any of the formats; this is simply a change to the syntax. This document is not an Internet Standards Track specification; it is published for informational purposes.
RFC6267 - MIKEY-IBAKE: Identity-Based Authenticated Key Exchange (IBAKE) Mode of Key Distribution in Multimedia Internet KEYing (MIKEY)
This document describes a key management protocol variant for the Multimedia Internet KEYing (MIKEY) protocol that relies on a trusted key management service. In particular, this variant utilizes Identity-Based Authenticated Key Exchange (IBAKE) framework that allows the participating clients to perform mutual authentication and derive a session key in an asymmetric Identity-Based Encryption (IBE) framework. This protocol, in addition to providing mutual authentication, eliminates the key escrow problem that is common in standard IBE and provides perfect forward and backward secrecy. This document is not an Internet Standards Track specification; it is published for informational purposes.
RFC6266 - Use of the Content-Disposition Header Field in the Hypertext Transfer Protocol (HTTP)
RFC 2616 defines the Content-Disposition response header field, but points out that it is not part of the HTTP/1.1 Standard. This specification takes over the definition and registration of Content-Disposition, as used in HTTP, and clarifies internationalization aspects. [STANDARDS-TRACK]
RFC6265 - HTTP State Management Mechanism
This document defines the HTTP Cookie and Set-Cookie header fields. These header fields can be used by HTTP servers to store state (called cookies) at HTTP user agents, letting the servers maintain a stateful session over the mostly stateless HTTP protocol. Although cookies have many historical infelicities that degrade their security and privacy, the Cookie and Set-Cookie header fields are widely used on the Internet. This document obsoletes RFC 2965. [STANDARDS-TRACK]
RFC6264 - An Incremental Carrier-Grade NAT (CGN) for IPv6 Transition
Global IPv6 deployment was slower than originally expected. As IPv4 address exhaustion approaches, IPv4 to IPv6 transition issues become more critical and less tractable. Host-based transition mechanisms used in dual-stack environments cannot meet all transition requirements. Most end users are not sufficiently expert to configure or maintain host-based transition mechanisms. Carrier-Grade NAT (CGN) devices with integrated transition mechanisms can reduce the operational changes required during the IPv4 to IPv6 migration or coexistence period.
RFC6263 - Application Mechanism for Keeping Alive the NAT Mappings Associated with RTP / RTP Control Protocol (RTCP) Flows
This document lists the different mechanisms that enable applications using the Real-time Transport Protocol (RTP) and the RTP Control Protocol (RTCP) to keep their RTP Network Address Translator (NAT) mappings alive. It also makes a recommendation for a preferred mechanism. This document is not applicable to Interactive Connectivity Establishment (ICE) agents. [STANDARDS-TRACK]
RFC6262 - RTP Payload Format for IP-MR Speech Codec
This document specifies the payload format for packetization of SPIRIT IP-MR encoded speech signals into the Real-time Transport Protocol (RTP). The payload format supports transmission of multiple frames per packet and introduces redundancy for robustness against packet loss and bit errors. [STANDARDS-TRACK]
RFC6261 - Encrypted Signaling Transport Modes for the Host Identity Protocol
This document specifies two transport modes for Host Identity Protocol (HIP) signaling messages that allow them to be conveyed over encrypted connections initiated with the Host Identity Protocol. This document defines an Experimental Protocol for the Internet community.
RFC6260 - Compressed Bundle Header Encoding (CBHE)
This document describes a convention by which Delay-Tolerant Networking (DTN) Bundle Protocol (BP) "convergence-layer" adapters may represent endpoint identifiers in a compressed form within the primary blocks of bundles, provided those endpoint identifiers conform to the structure prescribed by this convention.
RFC6259 - Delay-Tolerant Networking Previous-Hop Insertion Block
This document defines an extension block for use with the Delay- Tolerant Networking (DTN) Bundle Protocol. This Previous-Hop Insertion Block (PHIB) extension block is designed to be inserted by a forwarding node to provide the endpoint identifier (EID) of an endpoint of which the forwarding node is a member so that this EID may be conveyed to the next-hop receiving node. Knowledge of an EID of an endpoint of which a previous-hop node is a member may be required in some circumstances to support certain routing protocols (e.g., flood routing). If this EID cannot be provided by the convergence layer or other means, the PHIB defines the mechanism whereby the EID can be provided with the bundle. Each PHIB is always removed from the bundle by the receiving node so that its presence within the bundle is limited to exactly one hop. This document defines the format and processing of this PHIB. This document is a product of the Delay-Tolerant Networking Research Group and has been reviewed by that group. No objections to its publication as an RFC were raised. This document defines an Experimental Protocol for the Internet community.
RFC6258 - Delay-Tolerant Networking Metadata Extension Block
This document defines an extension block that may be used with the Delay-Tolerant Networking (DTN) Bundle Protocol. This Metadata Extension Block is designed to carry additional information that DTN nodes can use to make processing decisions regarding bundles, such as deciding whether to store a bundle or determining to which nodes to forward a bundle. The metadata that is carried in a metadata block must be formatted according to the metadata type that is identified in the block's metadata type field. One specific metadata type, for carrying URIs as metadata, is defined in this document. Other metadata types may be defined in separate documents. This document is a product of the Delay Tolerant Networking Research Group and has been reviewed by that group. No objections to its publication as an RFC were raised. This document defines an Experimental Protocol for the Internet community.
RFC6257 - Bundle Security Protocol Specification
This document defines the bundle security protocol, which provides data integrity and confidentiality services for the Bundle Protocol. Separate capabilities are provided to protect the bundle payload and additional data that may be included within the bundle. We also describe various security considerations including some policy options.
RFC6256 - Using Self-Delimiting Numeric Values in Protocols
Self-Delimiting Numeric Values (SDNVs) have recently been introduced as a field type in proposed Delay-Tolerant Networking protocols. SDNVs encode an arbitrary-length non-negative integer or arbitrary- length bitstring with minimum overhead. They are intended to provide protocol flexibility without sacrificing economy and to assist in future-proofing protocols under development. This document describes formats and algorithms for SDNV encoding and decoding, along with notes on implementation and usage. This document is a product of the Delay-Tolerant Networking Research Group and has been reviewed by that group. No objections to its publication as an RFC were raised. This document is not an Internet Standards Track specification; it is published for informational purposes.
RFC6255 - Delay-Tolerant Networking Bundle Protocol IANA Registries
The Delay-Tolerant Networking (DTN) Research Group research group has defined many protocols such as the Bundle Protocol and Licklider Transmission Protocol. The specifications of these protocols contain fields that are subject to a registry. For the purpose of its research work, the group created ad hoc registries. As the specifications are stable and have multiple interoperable implementations, the group would like to hand off the registries to IANA for official custody. This document describes the actions executed by IANA. This document is not an Internet Standards Track specification; it is published for informational purposes.
This document describes a framework for how the current IPv4 address space can be divided into two new address categories: a core address space (Area Locators, ALOCs) that is globally unique, and an edge address space (Endpoint Locators, ELOCs) that is regionally unique. In the future, the ELOC space will only be significant in a private network or in a service provider domain. Therefore, a 32x32 bit addressing scheme and a hierarchical routing architecture are achieved. The hierarchical IPv4 framework is backwards compatible with the current IPv4 Internet.
RFC6305 - I'm Being Attacked by PRISONER.IANA.ORG!
Many sites connected to the Internet make use of IPv4 addresses that are not globally unique. Examples are the addresses designated in RFC 1918 for private use within individual sites.
RFC6304 - AS112 Nameserver Operations
Many sites connected to the Internet make use of IPv4 addresses that are not globally unique. Examples are the addresses designated in RFC 1918 for private use within individual sites.
RFC6303 - Locally Served DNS Zones
Experience with the Domain Name System (DNS) has shown that there are a number of DNS zones that all iterative resolvers and recursive nameservers should automatically serve, unless configured otherwise. RFC 4193 specifies that this should occur for D.F.IP6.ARPA. This document extends the practice to cover the IN-ADDR.ARPA zones for RFC 1918 address space and other well-known zones with similar characteristics. This memo documents an Internet Best Current Practice.
RFC6302 - Logging Recommendations for Internet-Facing Servers
In the wake of IPv4 exhaustion and deployment of IP address sharing techniques, this document recommends that Internet-facing servers log port number and accurate timestamps in addition to the incoming IP address. This memo documents an Internet Best Current Practice.
RFC6301 - A Survey of Mobility Support in the Internet
Over the last two decades, many efforts have been devoted to developing solutions for mobility support over the global Internet, resulting in a variety of proposed solutions. We conducted a systematic survey of the previous efforts to gain an overall understanding on the solution space of mobility support. This document reports our findings and identifies remaining issues in providing ubiquitous and efficient Internet mobility support on a global scale. This document is not an Internet Standards Track specification; it is published for informational purposes.
RFC6298 - Computing TCP's Retransmission Timer
This document defines the standard algorithm that Transmission Control Protocol (TCP) senders are required to use to compute and manage their retransmission timer. It expands on the discussion in Section 4.2.3.1 of RFC 1122 and upgrades the requirement of supporting the algorithm from a SHOULD to a MUST. This document obsoletes RFC 2988. [STANDARDS-TRACK]
RFC6297 - A Survey of Lower-than-Best-Effort Transport Protocols
This document provides a survey of transport protocols that are designed to have a smaller bandwidth and/or delay impact on standard TCP than standard TCP itself when they share a bottleneck with it. Such protocols could be used for delay-insensitive "background" traffic, as they provide what is sometimes called a "less than" (or "lower than") best-effort service. This document is not an Internet Standards Track specification; it is published for informational purposes.
RFC6296 - IPv6-to-IPv6 Network Prefix Translation
This document describes a stateless, transport-agnostic IPv6-to-IPv6 Network Prefix Translation (NPTv6) function that provides the address-independence benefit associated with IPv4-to-IPv4 NAT (NAPT44) and provides a 1:1 relationship between addresses in the "inside" and "outside" prefixes, preserving end-to-end reachability at the network layer. This document defines an Experimental Protocol for the Internet community.
RFC6295 - RTP Payload Format for MIDI
This memo describes a Real-time Transport Protocol (RTP) payload format for the MIDI (Musical Instrument Digital Interface) command language. The format encodes all commands that may legally appear on a MIDI 1.0 DIN cable. The format is suitable for interactive applications (such as network musical performance) and content-delivery applications (such as file streaming). The format may be used over unicast and multicast UDP and TCP, and it defines tools for graceful recovery from packet loss. Stream behavior, including the MIDI rendering method, may be customized during session setup. The format also serves as a mode for the mpeg4-generic format, to support the MPEG 4 Audio Object Types for General MIDI, Downloadable Sounds Level 2, and Structured Audio. This document obsoletes RFC 4695. [STANDARDS-TRACK]
RFC6294 - Survey of Proposed Use Cases for the IPv6 Flow Label
The IPv6 protocol includes a flow label in every packet header, but this field is not used in practice. This paper describes the flow label standard and discusses the implementation issues that it raises. It then describes various published proposals for using the flow label and shows that most of them are inconsistent with the standard. Methods to address this problem are briefly reviewed. We also question whether the standard should be revised. This document is not an Internet Standards Track specification; it is published for informational purposes.
RFC6293 - Requirements for Internet-Draft Tracking by the IETF Community in the Datatracker
The document gives a set of requirements for extending the IETF Datatracker to give individual IETF community members, including the IETF leadership, easy methods for tracking the progress of the Internet-Drafts and RFCs of interest to them. This document is not an Internet Standards Track specification; it is published for informational purposes.
RFC6292 - Requirements for a Working Group Charter Tool
The IETF intends to provide a new tool to Area Directors for the creation, re-chartering, and closing of Working Groups. The tool will also allow the IETF community to view the status of the chartering process. This document describes the requirements for the proposed new tool, and it is intended as input to a later activity for the design and development of such a tool. This document is not an Internet Standards Track specification; it is published for informational purposes.
RFC6291 - Guidelines for the Use of the "OAM" Acronym in the IETF
At first glance, the acronym "OAM" seems to be well-known and well-understood. Looking at the acronym a bit more closely reveals a set of recurring problems that are revisited time and again.
RFC6290 - A Quick Crash Detection Method for the Internet Key Exchange Protocol (IKE)
This document describes an extension to the Internet Key Exchange Protocol version 2 (IKEv2) that allows for faster detection of Security Association (SA) desynchronization using a saved token.
RFC6289 - A Uniform Resource Name (URN) Namespace for CableLabs
This document describes the Namespace Identifier (NID) 'cablelabs' for Uniform Resource Names (URNs) used to identify resources published by Cable Television Laboratories, Inc. (CableLabs). CableLabs specifies and manages resources that utilize this URN identification model. Management activities for these and other resource types are handled by the manager of the CableLabs' Assigned Names and Numbers registry. This document is not an Internet Standards Track specification; it is published for informational purposes.
RFC6288 - URN Namespace for the Defence Geospatial Information Working Group (DGIWG)
This document describes the Namespace Identifier (NID) for Uniform Resource Name (URN) Namespace resources published by the Defence Geospatial Information Working Group (DGIWG). The DGIWG defines and manages resources that utilize this URN name model.
RFC6287 - OCRA: OATH Challenge-Response Algorithm
This document describes an algorithm for challenge-response authentication developed by the Initiative for Open Authentication (OATH). The specified mechanisms leverage the HMAC-based One-Time Password (HOTP) algorithm and offer one-way and mutual authentication, and electronic signature capabilities. This document is not an Internet Standards Track specification; it is published for informational purposes.
RFC6286 - Autonomous-System-Wide Unique BGP Identifier for BGP-4
To accommodate situations where the current requirements for the BGP Identifier are not met, this document relaxes the definition of the BGP Identifier to be a 4-octet, unsigned, non-zero integer and relaxes the "uniqueness" requirement so that only Autonomous-System-wide (AS-wide) uniqueness of the BGP Identifiers is required. These revisions to the base BGP specification do not introduce any backward compatibility issues. This document updates RFC 4271. [STANDARDS-TRACK]
RFC6285 - Unicast-Based Rapid Acquisition of Multicast RTP Sessions
When an RTP receiver joins a multicast session, it may need to acquire and parse certain Reference Information before it can process any data sent in the multicast session. Depending on the join time, length of the Reference Information repetition (or appearance) interval, size of the Reference Information, and the application and transport properties, the time lag before an RTP receiver can usefully consume the multicast data, which we refer to as the Acquisition Delay, varies and can be large. This is an undesirable phenomenon for receivers that frequently switch among different multicast sessions, such as video broadcasts.
RFC6284 - Port Mapping between Unicast and Multicast RTP Sessions
This document presents a port mapping solution that allows RTP receivers to choose their own ports for an auxiliary unicast session in RTP applications using both unicast and multicast services. The solution provides protection against denial-of-service or packet amplification attacks that could be used to cause one or more RTP packets to be sent to a victim client. [STANDARDS-TRACK]
RFC6283 - Extensible Markup Language Evidence Record Syntax (XMLERS)
In many scenarios, users must be able to demonstrate the (time of) existence, integrity, and validity of data including signed data for long or undetermined periods of time. This document specifies XML syntax and processing rules for creating evidence for long-term non- repudiation of existence and integrity of data. The Extensible Markup Language Evidence Record Syntax XMLERS provides alternative syntax and processing rules to the ASN.1 (Abstract Syntax Notation One) ERS (Evidence Record Syntax) (RFC 4998) syntax by using XML. [STANDARDS-TRACK]
RFC6282 - Compression Format for IPv6 Datagrams over IEEE 802.15.4-Based Networks
This document updates RFC 4944, "Transmission of IPv6 Packets over IEEE 802.15.4 Networks". This document specifies an IPv6 header compression format for IPv6 packet delivery in Low Power Wireless Personal Area Networks (6LoWPANs). The compression format relies on shared context to allow compression of arbitrary prefixes. How the information is maintained in that shared context is out of scope. This document specifies compression of multicast addresses and a framework for compressing next headers. UDP header compression is specified within this framework. [STANDARDS-TRACK]
RFC6281 - Understanding Apple's Back to My Mac (BTMM) Service
This document describes the implementation of Apple Inc.'s Back to My Mac (BTMM) service. BTMM provides network connectivity between devices so that a user can perform file sharing and screen sharing among multiple computers at home, at work, or on the road. The implementation of BTMM addresses the issues of single sign-on authentication, secure data communication, service discovery, and end-to-end connectivity in the face of Network Address Translators (NATs) and mobility of devices. This document is not an Internet Standards Track specification; it is published for informational purposes.
RFC6280 - An Architecture for Location and Location Privacy in Internet Applications
Location-based services (such as navigation applications, emergency services, and management of equipment in the field) need geographic location information about Internet hosts, their users, and other related entities. These applications need to securely gather and transfer location information for location services, and at the same time protect the privacy of the individuals involved. This document describes an architecture for privacy-preserving location-based services in the Internet, focusing on authorization, security, and privacy requirements for the data formats and protocols used by these services. This memo documents an Internet Best Current Practice.
RFC6279 - Proxy Mobile IPv6 (PMIPv6) Localized Routing Problem Statement
Proxy Mobile IPv6 is the IETF Standard for network-based mobility management. In Proxy Mobile IPv6, mobile nodes are topologically anchored at a Local Mobility Anchor, which forwards all data for registered mobile nodes. The setup and maintenance of localized routing, which allows forwarding of data packets between two mobile nodes' Mobility Access Gateways without involvement of their Local Mobility Anchor in forwarding, is not considered. This document describes the problem space of localized routing in Proxy Mobile IPv6. This document is not an Internet Standards Track specification; it is published for informational purposes.
RFC6278 - Use of Static-Static Elliptic Curve Diffie-Hellman Key Agreement in Cryptographic Message Syntax
This document describes how to use the 'static-static Elliptic Curve Diffie-Hellman key-agreement scheme (i.e., Elliptic Curve Diffie- Hellman where both participants use static Diffie-Hellman values) with the Cryptographic Message Syntax. In this form of key agreement, the Diffie-Hellman values of both the sender and receiver are long-term values contained in certificates. This document is not an Internet Standards Track specification; it is published for informational purposes.
RFC6277 - Online Certificate Status Protocol Algorithm Agility
The Online Certificate Status Protocol (OCSP) requires server responses to be signed but does not specify a mechanism for selecting the signature algorithm to be used. This may lead to avoidable interoperability failures in contexts where multiple signature algorithms are in use. This document specifies rules for server signature algorithm selection and an extension that allows a client to advise a server that specific signature algorithms are supported. [STANDARDS-TRACK]
RFC6276 - DHCPv6 Prefix Delegation for Network Mobility (NEMO)
One aspect of network mobility support is the assignment of a prefix or prefixes to a mobile router for use on the links in the mobile network. This document specifies how DHCPv6 prefix delegation can be used for this configuration task. The mobile router plays the role of requesting router, while the home agent assumes the role of delegating router. When the mobile router is outside its home network, the mobile router also assumes the role of DHCPv6 relay agent, co-located with the requesting router function. [STANDARDS-TRACK]
RFC6275 - Mobility Support in IPv6
This document specifies Mobile IPv6, a protocol that allows nodes to remain reachable while moving around in the IPv6 Internet. Each mobile node is always identified by its home address, regardless of its current point of attachment to the Internet. While situated away from its home, a mobile node is also associated with a care-of address, which provides information about the mobile node's current location. IPv6 packets addressed to a mobile node's home address are transparently routed to its care-of address. The protocol enables IPv6 nodes to cache the binding of a mobile node's home address with its care-of address, and to then send any packets destined for the mobile node directly to it at this care-of address. To support this operation, Mobile IPv6 defines a new IPv6 protocol and a new destination option. All IPv6 nodes, whether mobile or stationary, can communicate with mobile nodes. This document obsoletes RFC 3775. [STANDARDS-TRACK]
RFC6274 - Security Assessment of the Internet Protocol Version 4
This document contains a security assessment of the IETF specifications of the Internet Protocol version 4 and of a number of mechanisms and policies in use by popular IPv4 implementations. It is based on the results of a project carried out by the UK's Centre for the Protection of National Infrastructure (CPNI). This document is not an Internet Standards Track specification; it is published for informational purposes.
RFC6273 - The Secure Neighbor Discovery (SEND) Hash Threat Analysis
This document analyzes the use of hashes in Secure Neighbor Discovery (SEND), the possible threats to these hashes and the impact of recent attacks on hash functions used by SEND. The SEND specification currently uses the SHA-1 hash algorithm and PKIX certificates and does not provide support for hash algorithm agility. This document provides an analysis of possible threats to the hash algorithms used in SEND. This document is not an Internet Standards Track specification; it is published for informational purposes.
RFC6272 - Internet Protocols for the Smart Grid
This note identifies the key infrastructure protocols of the Internet Protocol Suite for use in the Smart Grid. The target audience is those people seeking guidance on how to construct an appropriate Internet Protocol Suite profile for the Smart Grid. In practice, such a profile would consist of selecting what is needed for Smart Grid deployment from the picture presented here. This document is not an Internet Standards Track specification; it is published for informational purposes.
RFC6271 - Requirements for SIP-Based Session Peering
This memo captures protocol requirements to enable session peering of voice, presence, instant messaging, and other types of multimedia traffic. This informational document is intended to link the various use cases described for session peering to protocol solutions. This document is not an Internet Standards Track specification; it is published for informational purposes.
RFC6270 - The 'tn3270' URI Scheme
This document is the specification of the 'tn3270' Uniform Resource Identifier (URI) scheme, which is used to designate the access to the resources available via Telnet 3270 mode (TN3270) and Telnet 3270 Enhanced mode (TN3270E). It updates RFC 1041 and RFC 2355, which specify these protocols, and RFC 1738, which firstly mentioned this URI scheme without defining its syntax and semantics. [STANDARDS-TRACK]
RFC6269 - Issues with IP Address Sharing
The completion of IPv4 address allocations from IANA and the Regional Internet Registries (RIRs) is causing service providers around the world to question how they will continue providing IPv4 connectivity service to their subscribers when there are no longer sufficient IPv4 addresses to allocate them one per subscriber. Several possible solutions to this problem are now emerging based around the idea of shared IPv4 addressing. These solutions give rise to a number of issues, and this memo identifies those common to all such address sharing approaches. Such issues include application failures, additional service monitoring complexity, new security vulnerabilities, and so on. Solution-specific discussions are out of scope.
RFC6268 - Additional New ASN.1 Modules for the Cryptographic Message Syntax (CMS) and the Public Key Infrastructure Using X.509 (PKIX)
The Cryptographic Message Syntax (CMS) format, and many associated formats, are expressed using ASN.1. The current ASN.1 modules conform to the 1988 version of ASN.1. This document updates some auxiliary ASN.1 modules to conform to the 2008 version of ASN.1; the 1988 ASN.1 modules remain the normative version. There are no bits- on-the-wire changes to any of the formats; this is simply a change to the syntax. This document is not an Internet Standards Track specification; it is published for informational purposes.
RFC6267 - MIKEY-IBAKE: Identity-Based Authenticated Key Exchange (IBAKE) Mode of Key Distribution in Multimedia Internet KEYing (MIKEY)
This document describes a key management protocol variant for the Multimedia Internet KEYing (MIKEY) protocol that relies on a trusted key management service. In particular, this variant utilizes Identity-Based Authenticated Key Exchange (IBAKE) framework that allows the participating clients to perform mutual authentication and derive a session key in an asymmetric Identity-Based Encryption (IBE) framework. This protocol, in addition to providing mutual authentication, eliminates the key escrow problem that is common in standard IBE and provides perfect forward and backward secrecy. This document is not an Internet Standards Track specification; it is published for informational purposes.
RFC6266 - Use of the Content-Disposition Header Field in the Hypertext Transfer Protocol (HTTP)
RFC 2616 defines the Content-Disposition response header field, but points out that it is not part of the HTTP/1.1 Standard. This specification takes over the definition and registration of Content-Disposition, as used in HTTP, and clarifies internationalization aspects. [STANDARDS-TRACK]
RFC6265 - HTTP State Management Mechanism
This document defines the HTTP Cookie and Set-Cookie header fields. These header fields can be used by HTTP servers to store state (called cookies) at HTTP user agents, letting the servers maintain a stateful session over the mostly stateless HTTP protocol. Although cookies have many historical infelicities that degrade their security and privacy, the Cookie and Set-Cookie header fields are widely used on the Internet. This document obsoletes RFC 2965. [STANDARDS-TRACK]
RFC6264 - An Incremental Carrier-Grade NAT (CGN) for IPv6 Transition
Global IPv6 deployment was slower than originally expected. As IPv4 address exhaustion approaches, IPv4 to IPv6 transition issues become more critical and less tractable. Host-based transition mechanisms used in dual-stack environments cannot meet all transition requirements. Most end users are not sufficiently expert to configure or maintain host-based transition mechanisms. Carrier-Grade NAT (CGN) devices with integrated transition mechanisms can reduce the operational changes required during the IPv4 to IPv6 migration or coexistence period.
RFC6263 - Application Mechanism for Keeping Alive the NAT Mappings Associated with RTP / RTP Control Protocol (RTCP) Flows
This document lists the different mechanisms that enable applications using the Real-time Transport Protocol (RTP) and the RTP Control Protocol (RTCP) to keep their RTP Network Address Translator (NAT) mappings alive. It also makes a recommendation for a preferred mechanism. This document is not applicable to Interactive Connectivity Establishment (ICE) agents. [STANDARDS-TRACK]
RFC6262 - RTP Payload Format for IP-MR Speech Codec
This document specifies the payload format for packetization of SPIRIT IP-MR encoded speech signals into the Real-time Transport Protocol (RTP). The payload format supports transmission of multiple frames per packet and introduces redundancy for robustness against packet loss and bit errors. [STANDARDS-TRACK]
RFC6261 - Encrypted Signaling Transport Modes for the Host Identity Protocol
This document specifies two transport modes for Host Identity Protocol (HIP) signaling messages that allow them to be conveyed over encrypted connections initiated with the Host Identity Protocol. This document defines an Experimental Protocol for the Internet community.
RFC6260 - Compressed Bundle Header Encoding (CBHE)
This document describes a convention by which Delay-Tolerant Networking (DTN) Bundle Protocol (BP) "convergence-layer" adapters may represent endpoint identifiers in a compressed form within the primary blocks of bundles, provided those endpoint identifiers conform to the structure prescribed by this convention.
RFC6259 - Delay-Tolerant Networking Previous-Hop Insertion Block
This document defines an extension block for use with the Delay- Tolerant Networking (DTN) Bundle Protocol. This Previous-Hop Insertion Block (PHIB) extension block is designed to be inserted by a forwarding node to provide the endpoint identifier (EID) of an endpoint of which the forwarding node is a member so that this EID may be conveyed to the next-hop receiving node. Knowledge of an EID of an endpoint of which a previous-hop node is a member may be required in some circumstances to support certain routing protocols (e.g., flood routing). If this EID cannot be provided by the convergence layer or other means, the PHIB defines the mechanism whereby the EID can be provided with the bundle. Each PHIB is always removed from the bundle by the receiving node so that its presence within the bundle is limited to exactly one hop. This document defines the format and processing of this PHIB. This document is a product of the Delay-Tolerant Networking Research Group and has been reviewed by that group. No objections to its publication as an RFC were raised. This document defines an Experimental Protocol for the Internet community.
RFC6258 - Delay-Tolerant Networking Metadata Extension Block
This document defines an extension block that may be used with the Delay-Tolerant Networking (DTN) Bundle Protocol. This Metadata Extension Block is designed to carry additional information that DTN nodes can use to make processing decisions regarding bundles, such as deciding whether to store a bundle or determining to which nodes to forward a bundle. The metadata that is carried in a metadata block must be formatted according to the metadata type that is identified in the block's metadata type field. One specific metadata type, for carrying URIs as metadata, is defined in this document. Other metadata types may be defined in separate documents. This document is a product of the Delay Tolerant Networking Research Group and has been reviewed by that group. No objections to its publication as an RFC were raised. This document defines an Experimental Protocol for the Internet community.
RFC6257 - Bundle Security Protocol Specification
This document defines the bundle security protocol, which provides data integrity and confidentiality services for the Bundle Protocol. Separate capabilities are provided to protect the bundle payload and additional data that may be included within the bundle. We also describe various security considerations including some policy options.
RFC6256 - Using Self-Delimiting Numeric Values in Protocols
Self-Delimiting Numeric Values (SDNVs) have recently been introduced as a field type in proposed Delay-Tolerant Networking protocols. SDNVs encode an arbitrary-length non-negative integer or arbitrary- length bitstring with minimum overhead. They are intended to provide protocol flexibility without sacrificing economy and to assist in future-proofing protocols under development. This document describes formats and algorithms for SDNV encoding and decoding, along with notes on implementation and usage. This document is a product of the Delay-Tolerant Networking Research Group and has been reviewed by that group. No objections to its publication as an RFC were raised. This document is not an Internet Standards Track specification; it is published for informational purposes.
RFC6255 - Delay-Tolerant Networking Bundle Protocol IANA Registries
The Delay-Tolerant Networking (DTN) Research Group research group has defined many protocols such as the Bundle Protocol and Licklider Transmission Protocol. The specifications of these protocols contain fields that are subject to a registry. For the purpose of its research work, the group created ad hoc registries. As the specifications are stable and have multiple interoperable implementations, the group would like to hand off the registries to IANA for official custody. This document describes the actions executed by IANA. This document is not an Internet Standards Track specification; it is published for informational purposes.