>> IPv6 has twice (8) segments compared to IPv4 however each segment >> is 2 octets making IPv6 address space 4 times (128 bits) compared >> to IPv4 (32 bits). > Oct... means 8. > > Each segment of an IP6 segment can contain 4 hexadecimal digits. > Hexadecimal means 0 to F. > > Are you sure 'octets' is correct? 4 hex digits == 16 bits. 2 octets == 2 * 8 = 16 bits.