The value of the object tmnxDhcpServerCfgUseGiAddress specifies
whether GI address matching is enabled.
If tmnxDhcpServerCfgUseGiAddress is set to 'true(1)', then an IP address
will be provided based on the Gateway IP address from the DHCP message,
even when authentication fails or when there is no local
user database configured in tmnxDhcpServerCfgUserDatabase.