each protocol will provide a routing table for their given address space or work with each other to provide routing between address spaces:
inet represents IPv4 addressing such as 8.8.8.8
inet6 represents IPv6 addressing such as 2001:4860:4860::8888
ISO CLNS. The International Organization for Standardization (ISO) Connectionless Network Service (CLNS) protocol is a standard for the network layer of the Open System Interconnection (OSI) model
Multiprotocol Label Switching (MPLS) is a type of data-carrying technique for high-performance telecommunications networks. MPLS directs data from one network node to the next based on short path labels rather than long network addresses