IPv6 addressing
Current DNS supports two forms:
- Mapped , e.g.
Cute.example.com aaaa ::ffff:192.0.2.10
- Native, e.g.
Cute.example.com aaaa 3ffe:0805::cafe:babe
Mapped API is not clear, each OS has implemented differently
Resolver and slave behaviour is unpredictable with mapped addresses
RECOMMED: DO NOT USE MAPPED ADDRESSES in the DNS