This object contains an first unused value for fsDhcp6SrvPoolIndex in the fsDhcp6SrvPoolTableTable, or a zero to indicate that next index does not exists. This object will give the first empty index value for example when user create the four rows of fsDhcp6SrvPoolTable with index 2,5,6,8.Then fsDhcp6SrvPoolTableNextIndex object will return the value 1 as next unused Index.