Multicast Listener Discovery

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Multicast Listener Discovery (MLD) is a component of the Internet Protocol Version 6 (IPv6) suite. MLD is used by IPv6 routers for discovering multicast listeners on a directly attached link, much like Internet Group Management Protocol (IGMP) is used in IPv4. The protocol is embedded in ICMPv6 instead of using a separate protocol. MLDv1 is similar to IGMPv2[1] and MLDv2 similar to IGMPv3.[2]


The ICMPv6 messages use type 143.[2]


Several operating system support MLDv2:


  1. ^ S. Deering; W. Fenner; B. Haberman (October 1999). Multicast Listener Discovery (MLD) for IPv6. Network Working Group. doi:10.17487/RFC2710. RFC 2710. Proposed Standard. Updated by RFC 3590 and 3810.
  2. ^ a b R. Vida; L. Costa, eds. (June 2004). Multicast Listener Discovery Version 2 (MLDv2) for IPv6. Network Working Group. doi:10.17487/RFC3810. RFC 3810. Proposed Standard. Updates RFC 2710. Updated by RFC 4604.
  3. ^ "MLD and IGMP Using Windows Sockets". Windows Sockets 2. 2011-09-16.
  4. ^ "mld(4): Multicast Listener Discovery Protocol". FreeBSD Kernel Interfaces Manual. 2009-05-27.
  5. ^ Torvalds, Linus (2003-04-19). "Linux 2.5.68 ChangeLog".
  6. ^ IPv6Hardening Guide for OS-X (PDF), 2015-01-29, retrieved 2021-05-23