This variable is one of up to 60 IP addresses that LANA will proxy
ARP for. The address should be on the same subnet as the attached
CSU/DSU in order for ARP to function properly.
Reading an IP address with the value 0.0.0.0 represents a cleared/
uninitialized table entry.
Setting the IP address to 0.0.0.0 clears the indexed entry.