What is a characteristic of unique local addresses?
- They are defined in RFC 3927.
- Their implementation depends on ISPs providing the service.
- They allow sites to be combined without creating any address conflicts.
- They are designed to improve the security of IPv6 networks.
Link-local addresses are defined in RFC 3927. Unique local addresses are independent of any ISP, and are not meant to improve the security of IPv6 networks.