This object indicates numerically lowest available index within this entity, which may be used for the value of index in the creation of new entry in dhcpRelayListenersTable. An index is considered available if the index falls within the range of 1 to dhcpRelayListenersMaxEntries and it is not being used to index an existing entry in the dhcpRelayListenersTable contained this entity. This value should only be used as guideline for the management application and there is no requirement on the management application to create entries based upon this index value. Value of zero indicates there is no more room for new dhcpRelayListenersTable creation.