MADCAP

This document describes limitations of the existing range of dynamic IPv6 multicast addresses specified in "Allocation Guidelines for IPv6 Multicast Addresses" (RFC 3307). It updates RFC 3307 by replacing these allocations with a new IANA registry in the "IPv6 Multicast Address Space" registry group. The document also defines initial contents of the new registry: a reduced allocation for the Multicast Address Dynamic Client Allocation Protocol (MADCAP) (RFC 2730), a range for Source-Specific Multicast (SSM), a Private Use range, a range for Experimental Use, and Solicited-Node multicast addresses (which were not previously noted in RFC 3307).

This document surveys current problems with existing protocols for automatically assigning multicast IP addresses in zero-configuration (zeroconf) networking environments. It addresses key challenges, such as link-layer address collisions, hardware limitations, multicast snooping inefficiencies, and the need to avoid manual configuration. Based on these challenges, it derives requirements for a lightweight, decentralized solution for dynamically allocating unique multicast group addresses without central coordination.

The document presents explicit requirements covering discovery, allocation, conflict detection and resolution, and lease management. It also evaluates considerations specific to IPv6 and IPv4 multicast address ranges, and identifies approaches that are unsuited for zeroconf deployment. This foundation serves as a reference for developing future solutions for multicast address allocation that operate autonomously within local networks.

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 used for managing multicast address allocation. [STANDARDS-TRACK]

This document specifies guidelines that must be implemented by any

entity responsible for allocating IPv6 multicast addresses. This

includes, but is not limited to, any documents or entities wishing

to assign permanent IPv6 multicast addresses, allocate dynamic IPv6

multicast addresses, and define permanent IPv6 multicast group

identifiers. The purpose of these guidelines is to reduce the

probability of IPv6 multicast address collision, not only at the

IPv6 layer, but also at the link-layer of media that encode portions

of the IP layer address into the MAC layer address.

This document defines a new option to the Multicast Address Dynamic Client Allocation Protocol (MADCAP) to support nested scoping. [STANDARDS-TRACK]

This document describes the Multicast Address-Set Claim (MASC) protocol which can be used for inter-domain multicast address set allocation. This memo defines an Experimental Protocol for the Internet community.

This document describes the "abstract service interface" for the dynamic multicast address allocation service, as seen by applications. This memo provides information for the Internet community.

This document defines a protocol, Multicast Address Dynamic Client Allocation Protocol (MADCAP), that allows hosts to request multicast addresses from multicast address allocation servers. [STANDARDS-TRACK]