ip6 is a protocol that defines which IPv6 address should be used.
The human-readable format of the ip6 protocol uses the colon-seperated format:
2604:1380:4602:5c00::3
TODO: Consider also supporting decimal format and/or format that encloses the IP address with [ and ].
The binary format of the ip6 protocol uses the well-known binary format of 128 bits:
0x26 0x04 0x13 0x80 0x46 0x02 0x5c 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x03
128 bits (Implicit)