It will forward the packet to the next hop address.
Refer To The Exhibit. A Router, Whose Table Is Shown, Receives A Packet That Is Destined For 192.168.1.4. How Will Router Treat The Packet?
The packet will be forwarded to the destination host.
The router will search it's routing table and if that network is not in it's routing table, it will just disregard the packet. If the network is in the routing table, it will send the packet out on that port.