Multicast Listener Discovery
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 and MLDv2 similar to IGMPv3. The protocol is described in RFC 3810 which has been updated by RFC 4604.
| Internet protocol suite |
|---|
| Application layer |
| Transport layer |
| Internet layer |
| Link layer |
|
Protocol
The ICMPv6 messages use type 143.[1]
Support
Several operating system support MLDv2:
- Windows Vista and later[2]
- FreeBSD since release 8.0[3]
- The Linux kernel since 2.5.68[4]
References
- Costa, Luis Henrique Maciel Kosmalski; Vida, Rolland. "Multicast Listener Discovery Version 2 (MLDv2) for IPv6". tools.ietf.org. Retrieved 2020-01-27.
- "MLD and IGMP Using Windows Sockets". Windows Sockets 2. 2011-09-16.
- "mld(4): Multicast Listener Discovery Protocol". FreeBSD Kernel Interfaces Manual. 2009-05-27.
- Torvalds, Linus (2003-04-19). "Linux 2.5.68 ChangeLog".
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