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Understanding IPv6, Second Edition by Joseph Davies

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Chapter 7. Multicast Listener Discovery and MLD Version 2

At the end of this chapter, you should be able to do the following:

  • Describe the purpose of the IPv6 Multicast Listener Discovery (MLD) and MLD version 2 (MLDv2) protocols.

  • Describe how IPv6 hosts and routers support multicast communication.

  • Describe the common structure of MLD and MLDv2 messages.

  • Describe the structure and purpose of each type of MLD and MLDv2 message.

MLD and MLDv2 Overview

Multicast Listener Discovery (MLD) is the IPv6 equivalent of Internet Group Management Protocol version 2 (IGMPv2) defined in RFC 2236 for Internet Protocol version 4 (IPv4). MLD is a set of messages exchanged by routers and hosts, allowing routers to discover the set of multicast addresses for which there ...

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