This is the row-status object for adding or deleting an ICMP-specific filter entry, which can only be set to active once a valid cfgFilterICMPType, the specific ICMP message type being matched, has been configured for that row. Because ICMP has many distinct message types, echo request, destination unreachable, time exceeded, and so on, requiring the type to be set before activation ensures a filter entry can never go live matching an undefined or ambiguous ICMP type. An attempt to activate a new ICMP filter entry meant to match echo-request messages, made before actually setting that specific ICMP type value, would be rejected by the device.