IPv4 in IPv6 in AAAA records

[Jun-ichiro itojun Hagino]

> ::ffff/96 is the IPv4-mapped-IPv6 address prefix, it's intended use is
> to allow an IPv6 stack to forward IPv4 packets to an IPv6-listening
> service (for example NSD listening on :: on Linux will see packets
> from 193.1.193.194 as ::ffff:193.1.193.194).

	IPv4 mapped address is an internal representation of IPv4 node (peer)
	on a host operating system.  it should not appear on DNS database.

itojun