"Which CLNS Inactive Area to use?"

    A CLNS OSI Transport template specifying use of the Null Internet
    routing protocol selects the Routing circuit to be used based on
    the inactive area address of the Routing circuit.

    If Null Internet routing is to be supported then an inactive area
    address must be configured for the circuit. The inactive area
    address for the circuit must be different to any area addresses
    used by DECnet-Plus routers on the same LAN. If more than one
    LAN Routing circuit is to be configured on this system and Null
    Internet is required on each circuit, then each circuit should
    have a different inactive area address.

    The CLNS inactive area should be the same as the inactive area
    set in routing, or else Null Internet cannot be used.