The table tmnxLocalUserDbTable contains objects to configure
the local user database.
The local database is used for authentication by either
PPPoE (TIMETRA-PPPOE-MIB::tmnxPppoeIesIfPapChapUserDb) or a local
DHCP server (TIMETRA-DHCP-SERVER-MIB::tmnxDhcpServerCfgUserDatabase).