This TimeInterval object reports the remaining lifetime of a source-address binding entry, measured in hundredths of a second, with a value of 2147483647 meaning infinite lifetime for manually created bindings. Admins check this to know how much longer a dynamically learned (DHCP, SLAAC, or SEND) binding will remain valid before it expires and needs to be relearned. For example, a binding created via DHCP might show a remaining lifetime counting down from a value corresponding to the DHCP lease time, while a manual binding would show the maximum value indicating it never expires.