This read-only TruthValue is a boolean flag indicating whether the device's internal IP address tracking table is being filled at an excessive rate, a distinct threat condition of its own. It warns an admin the appliance's address-tracking resources may be under pressure from an attack specifically designed to exhaust its state tables. For example, an admin sees excessiveAddressTableUsage=true during an attack that floods many distinct source addresses specifically to overflow the device's address table.