Multicast Listener Discovery
| 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 IGMPv2REFERENCE FOR RFC2710 IS NOT DEFINED YET. You are invited to add it here. and MLDv2 similar to IGMPv3.REFERENCE FOR RFC9777 IS NOT DEFINED YET. You are invited to add it here..
Protocol
The following ICMPv6 message types are used:
ICMPv6 message type values[1] Message Type value Multicast Listener Query 130 MLDv1 Multicast Listener Report 131 MLDv2 Multicast Listener Report 143 Multicast Listener Done 132
All MLDv1/MLDv2 messages have a link-local IPv6 Source Address (fe80::/10). MLDv2 Reports may be sent from the unspecified address (::/128) if no valid link-local IPv6 source address is present.[1]
MLDv2 Multicast Listener Reports are sent to ff02::16, to which all MLDv2-capable multicast routers listen.[1]
Support
Several operating systems support MLDv2:
- Windows Vista and later[2]
- FreeBSD since release 8.0[3]
- The Linux kernel since 2.5.68[4]
- macOS[5]
References
- ↑ 1.0 1.1 1.2 Cite error: Invalid
<ref>tag; no text was provided for refs namedrfc9777 - ↑ "MLD and IGMP Using Windows Sockets". Windows Sockets 2. 2011-09-16. http://msdn.microsoft.com/en-us/library/windows/desktop/ms738558(v=vs.85).aspx.
- ↑ "mld(4): Multicast Listener Discovery Protocol". FreeBSD Kernel Interfaces Manual. 2009-05-27. http://www.FreeBSD.org/cgi/man.cgi?query=mld.
- ↑ "Linux 2.5.68 ChangeLog". 2003-04-19. https://lwn.net/Articles/29489/.
- ↑ IPv6Hardening Guide for OS-X, 2015-01-29, http://ipv6now.com.au/primers/ERNW_Hardening_IPv6_MacOS-X_v1_0.pdf, retrieved 2021-05-23
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