Exam LX0-104 topic 5 question 25 discussion

A valid IPv6 address follows the syntax and format defined in the Internet Protocol version 6 (IPv6) specifications. According to the specifications, an IPv6 address consists of 8 blocks of 16-bit hexadecimal values separated by colons (:). Each block can be represented by 4 hexadecimal characters, or can be abbreviated using a double colon (::) to represent consecutive blocks of zeros. For example, the address 2001:db8:3241::1 is a valid IPv6 address, where 2001:db8:3241 are the non-zero blocks, and the double colon represents multiple blocks of zeros. In contrast, the addresses 2001::db8:4581::1 and 2001%db8%9990%%1 are not valid IPv6 addresses, as they do not follow the specified format. The address 2001.db8.819f..1 is also not valid, as it uses dots instead of colons to separate the blocks.