The value of the object tmnxLocUsrDbPppoePool specifies
the IP address pool which is used to search for an IP address for this
host.
This object can only be configured if object tmnxLocUsrDbPppoeAddrType
is 'unknown(0)' and the values of the objects
tmnxLocUsrDbPppoeUseGiAddress and tmnxLocUsrDbPppoeUseClientPool
are 'false (2)'.