This message is displayed one-time per system boot when HAL.IPv6Mc.L2McTblFull is hit and multicast compression is disabled as a hint to the user that this feature may improve or alleviate the current scaling limitation.
This is an informational message with no remedy.
Info
Layer 2 multicast compression may improve Layer 2 multicast table scaling when multiple L2MC forwarding entries have common egress lists.