To add a new entry to the vmpsTable, set this
object to primary(2) or other(3) for an IP address
which is not already in the table. The primary
entry will be used first, if it is reachable.
Otherwise one of the other entries will be used.
Setting one entry to primary(2) causes any
previous primary entry to change to other(3).
To remove an entry from the table, set this
object to invalid(1).