Multicast/Group Address

If a multicast/group address that is currently enabled is specified, receipt of packets destined for that group address is disabled. If an address is specified that is not currently enabled, EINVAL is returned.

If no functional or multicast/group addresses are active after receipt of this command, the NDD_ALTADDRS flag in the ndd_flags field is reset. Additionally for Token Ring, if no multicast/group address is active after receipt of this command, the TOK_RECEIVE_GROUP flag in the ndd_flags field is reset.