Description: Each row represents a local user database mask.

Entries in this table can be created or deleted via SNMP operations.
        
An incoming string of the type that corresponds to the value of the
tmnxLocUsrDbDhcpMaskMatchType index of this conceptual row 
is matched with the object in the tmnxLocUsrDbDhcpTable  
that corresponds to the values of the  
tmnxLocUsrDbUserDatabaseName and tmnxLocUsrDbDhcpMaskMatchType 
indices in this conceptual row:

match type    | object
--------------------------------------------
circuitId     | tmnxLocUsrDbDhcpCircuitId
macAddr       | tmnxLocUsrDbDhcpMacAddress
remoteId      | tmnxLocUsrDbDhcpRemoteId
sapId         | tmnxLocUsrDbDhcpSapId
serviceId     | tmnxLocUsrDbDhcpServiceId
string        | tmnxLocUsrDbDhcpString
systemId      | tmnxLocUsrDbDhcpSystemId
option60      | tmnxLocUsrDbDhcpOption60