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| Internet protocol suite |
|---|
| Application layer |
| Transport layer |
| Internet layer |
| Link layer |
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]
Protocol
[edit]The following ICMPv6 message types are used:
ICMPv6 message type values[2] Message Type value Multicast Listener Query 130 MLDv1 Multicast Listener Report 131 MLDv2 Multicast Listener Report 143 Multicast Listener Done 132
Support
[edit]Several operating systems support MLDv2:
- Windows Vista and later[3]
- FreeBSD since release 8.0[4]
- The Linux kernel since 2.5.68[5]
- macOS[6]
References
[edit]- ^ 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.
- ^ 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.
- ^ "MLD and IGMP Using Windows Sockets". Windows Sockets 2. 2025-08-06.
- ^ "mld(4): Multicast Listener Discovery Protocol". FreeBSD Kernel Interfaces Manual. 2025-08-06.
- ^ Torvalds, Linus (2025-08-06). "Linux 2.5.68 ChangeLog".
- ^ IPv6Hardening Guide for OS-X (PDF), 2025-08-06, retrieved 2025-08-06