On disabling the ICMP multicast processing, ICMPv6 Echo Request packets sent to IPv6 multicast addresses are dropped when they reach the control plane.
Use this procedure to disable the IPv6 ICMP multicast on the global router. By default, the IPv6 ICMP multicast feature is enabled.
enable
configure terminal
Optional: router vrf WORD<1-16>
no ipv6 icmp echo-multicast-request
show ipv6 global [vrf WORD<1–16> | vrfids WORD<0–512>]