[Asrg] For DNSBLs, embedded IPv4 in IPv6

[John Levine]

Someone pointed out that in some popular dual stack systems, connections 
from IPv4 addresses appear as IPv6 addresses in :FFFF:0000:0000/96, which 
I gather is reasonably consistent with v6 standards.

The immediate question is whether to add a sentence or two to the DNSBL 
spec saying that if you have a DNSBL listing both v4 and v6 addresses, and 
you list a v4 address, you SHOULD or MUST also list the corresponding 
embedded v6 address.

The real question is who's got enough real v6 experience and expertise to 
answer all of these v6 questions.

Regards,
John Levine, johnl at iecc.com, Primary Perpetrator of "The Internet for Dummies",
Information Superhighwayman wanna-be, http://www.johnlevine.com, ex-Mayor
"More Wiener schnitzel, please", said Tom, revealingly.