This is the SNPA Address to which a PDU may be forwarded to reach a destination matching the address prefix of the Reachable Address, following the ManualOrAutomatic behavior. It is the explicitly configured next-hop SNPA address used when ciiRAMapType is set to explicit, meaning the admin or automatic process is manually specifying exactly which subnetwork address to forward toward rather than relying on the router to derive it from the destination address itself. For example, on a broadcast segment where SNPA cannot be automatically extracted, an admin configuring ciiRAMapType as explicit would need to also populate this object with the correct next-hop SNPA address by hand for forwarding to work.