IPv6 blacklisting: Will it be harder to fight spammers? Update

IPv6 blacklisting: Will it be harder to fight spammers?

UPDATE:  I received a nice posting from Paul Vixie (1), Chairman and Chief Scientist of Internet Software Consortium (ISC) (2), a guy I meet in the early 90′s, about a posting he made to a popular Circle ID blog (3) concerning a “Two Stage Filtering for IPv6 Electronic Mail“(4)  he was proposing to mitigate SPAM in IPv6.

Thank you Paul for the update.

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(1) Paul Vixie, http://en.wikipedia.org/wiki/Paul_Vixie
(2) Internet Software Consortium (ISC), http://www.isc.org/
(3) CircleID, http://www.circleid.com
(4) Two Stage Filtering for IPv6 Electronic Mail, http://www.circleid.com/posts/20110607_two_stage_filtering_for_ipv6_electronic_mail/
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Paul Vixie’s Blog: http://www.isc.org/blog/12/