Overview of IPv6 Neighbor Discovery Multicast Suppress
The IPv6 Neighbor Discovery (ND) multicast suppress feature stops the ND multicast Neighbor Solicit (NS) messages by dropping them (and responding to solicitations on behalf of the targets) or by converting them into unicast traffic. This feature reduces the amount of control traffic necessary for proper link operations.
When an address is inserted into the binding table, an address resolution request sent to a multicast address is intercepted, and the device either responds on behalf of the address owner or converts the request into a unicast message and forwards it to its destination.
The following figure provides an overview of this feature:
![](/c/dam/en/us/td/i/300001-400000/330001-340000/334001-335000/334703.eps/_jcr_content/renditions/334703.jpg)