What is the correct compressed format of the IPv6 address 2001:0db8:eeff:000a:0000:0000:0000:0001?

The correct compressed format of the IPv6 address 2001:0db8:eeff:000a:0000:0000:0000:0001 is indeed 2001:db8:eeff:a::1.

In IPv6, the compression rules allow for the removal of leading zeros from each segment, which is one way to simplify the address. In this case, '0db8' simplifies to 'db8' and '000a' simplifies to 'a'. The consecutive groups of zeros can be replaced with a double colon (::), but this can only be done once in an IPv6 address to avoid ambiguity.

The segment '0000:0000:0000:0000' consists of four groups of zeros, which can be compressed as a single double colon. However, in this answer, it’s applied to the last segment: the full address is reduced to '2001:db8:eeff:a::1', making it concise.

This method reflects the efficiency of IPv6 addressing, designed to ensure easier readability and management of addresses.