IPv4-Mapped IPv6 Address
From Teknologisk videncenter
IPv4 Mapped
| IPv6 Address Type: | IPv4 Mapped |
| Prefix: | ::ffff/96 |
| Local Routeable: | Yes |
| Global Routeable: | Yes |
| Global Unique: | Yes |
| Example: | ::ffff:83.90.47.30 |
| IPv4 Equivalent: | None |
| Described in: | rfc4291 |
| rfc4038 section 4.2 | |
Explanation
These addresses are used to embed IPv4 addresses in an IPv6 address. One use for this is in a dual stack transition scenario where IPv4 addresses can be mapped into an IPv6 address.
See RFC 4038 for more details