Address notation

Separate 4 figures of hexadecimal by ":"
3ffe:0501:0008:1234:0260:97ff:fe40:efab
ff02:0000:0000:0000:0000:0000:0000:0001

Preceding 0 for each piece can be omitted
3ffe:501:8:1234:260:97ff:fe40:efab
ff02:0:0:0:0:0:0:1

Continuous 0 piece can be expressed by "::" (at most once)
ff02::1

Prefix length (0 - 128) is placed after "/"
3ffe:500::/24

Mixed representation of IPv6 and IPv4
use the standard IPv4 representation for the last 32bits
e.g. 3ffe:501:ffff::203.178.141.194 = 3ffe:501:ffff::cbb2:8dc2