This read-write INTEGER selects the operation to perform on the address entry identified by addrIndex, among read-random(1), read-next(2), zero-stats(3), update(4), delete(5), and read-block(6). An administrator uses this control variable to turn the address table into a pseudo-cursor for walking, updating, or clearing entries entirely over SNMP. For example, the admin sets addrOperation to delete(5) after first setting addrIndex, removing a specific stale entry from the address table.