To display the ARP table on a Unix system, ... The output from arp -a will list the network interface, ... for example, indicates that router.mynet.org is a Cisco device.

Using proxy ARP or a published ARP entry on one of the 201.2.14.x machines, create a “fake” IP address for the router on the 192.9.200.0 network, say, 192.9.200.100.