[CentOS] IPv6 on CentOS-6 - IPTables

It appears likely that within the next two quarters we will be moving
off of our IPv4 class C's and onto a single IPv6 /40 for our sites.

We have a fairly complex IPTables setup which handles our gateways and
internal hosts.  My question is just how much effort is involved in
moving these rules from IPv4 to IPv6?  Are there elements in one that
are not available in the other?  Are there any fundamental
incompatibilites?  Does anyone have a good reference to a case history
of moving from one to the other?

Regards,

-- 
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James B. Byrne                mailto:ByrneJB at Harte-Lyne.ca
Harte & Lyne Limited          http://www.harte-lyne.ca
9 Brockley Drive              vox: +1 905 561 1241
Hamilton, Ontario             fax: +1 905 561 0757
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