MPLS backbone to support ipv6

Folks,
We currently have MPLS backbone comprised of about 12 routers in the core. We could like to implement support for IPV6. Has anyone implemented this in their MPLS network yet. I know very few providers have deployed ipv6 support on their MPLS network. Could someone point out areas I should be focussing on to make this happen?
Thanks,
Parwal

I appreciate your response to my questions. I had another question for you. I will surely rate this post.
I have 7600's and 7500's in my backbone and 7200's on the edge. My question is that when look at the feature navigator the 7600 with Sup 720 is missing a of basic features required to be a core router of an MPLS Backbone. Features like Traffic engineering fast reroute, MPLS enabled Netflow and missing for this platform, is this platform not a good candidate to be a Backbone router of a service provider offering MPLS services??? 7500 on the other hand seems to have support for the MPLS related features. Please give me your advice, i would highly appreciate it.

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See if this helps.
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http://www.cisco.com/en/US/docs/ios/ipv6/configuration/guide/ip6-roadmap.html
You may also want to consult with your sales team.
What is the application?

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i known my answer is probably too late but maybe it can help others who are having the same difficulties. My setup looks almost like yours and I did the same steps as you did. Unfortunately with exactly the same results.
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MPLS backbone to support ipv6

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