- IPv6 addresses can be converted to IPv4 addresses and vice versa through a process of dividing the octets by 16 and representing the quotients and remainders in hexadecimal. - For example, the IPv4 address 192.168.99.1 would convert to the IPv6 portion 2002:C0A8:6301::1/64 by dividing each octet by 16 to get the hexadecimal representation. - Converting back, the hexadecimal values C0A8:6301 would be reconverted to decimal by multiplying the hexadecimal places by 16 and 1, respectively, and summed to get the original IPv4 address 192.168.99.1.