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What is MLD message?
MLD is an asymmetric protocol, specifying different behaviors for multicast listeners and for routers. For those multicast addresses to which a router itself is listening, the router performs both parts of the protocol, including responding to its own messages.
What is a duplicate address?
Duplicate address detection (DAD) is used to verify that an IPv6 home address is unique on the LAN before the address is assigned to a physical interface (for example, QDIO). z/OS® Communications Server responds to other nodes that are doing DAD for IP addresses assigned to the interface.
What is MLD on router?
The Multicast Listener Discovery (MLD) Protocol manages multicast groups by establishing, maintaining, and removing groups on a subnet. Multicast routing devices use MLD to learn which groups have members on each of their attached physical networks. MLD must be enabled for the router to receive IPv6 multicast packets.
When a node starts duplicate address detection it sends out a neighbor solicitation message what is the source address?
The neighbor solicitation message contains the following information: Source address: IPv6 address of the node 2 interface that sends the message. Destination address: IPv6 address of node 1. Link-layer address of node 2.
Why does IPv6 not send MLD report messages?
Several IPv6 implementations skip sending MLD Report messages during duplicate address detection because they have no valid link-local address. This leads to operational problems when a node is attached to switches that perform MLD snooping.
Can a MLDv2 report be sent with an unspecified address?
An MLDv2 Report MUST be sent with a valid IPv6 link-local source address, or the unspecified address (::), if the sending interface has not acquired a valid link-local address yet. Sending reports with the unspecified address is allowed to support the use of IP multicast in the Neighbor Discovery Protocol [RFC2461].
How does duplicate address detection ( dad ) work in IPv6?
Duplicate Address Detection (DAD) IPv6 Addressing Configuration > Duplicate Address Detection (DAD) next. Duplicate Address Detection (DAD) DAD verifies that a configured unicast IPv6 address is unique before it is assigned to a VLAN interface on the switch. DAD is enabled in the default IPv6 configuration and can be reconfigured, disabled,
How does duplicate address detection ( dad ) work in unicast?
Duplicate Address Detection (DAD) DAD verifies that a configured unicast IPv6 address is unique before it is assigned to a VLAN interface on the switch. DAD is enabled in the default IPv6 configuration and can be reconfigured, disabled, or re-enabled at the global config or per-interface command level.