When a device is assigned a global unicast or link-local unicast address, it is recommended that is performed on the address to ensure that it is unique.

DAD (Duplicate Address Detection) is performed on the address to ensure that it is unique.

Explanation:

a) click on any cells in the range of data

b) click the data

c) click sort& filter group, click sort

d) select the column to sort by and then select a sort order

e) select the next column to sort by and select the sort order

f) click ok