IPv6 SEO implecations?

[nenolod at systeminplace.net (William Pitcock)]

On Mon, 28 Mar 2011 15:18:30 -0700
Wil Schultz <wschultz at bsdboy.com> wrote:

> I'm attempting to find out information on the SEO implications of
> testing ipv6 out.
> 
> A couple of concerns that come to mind are:
> 
> 1) www.domain.com and ipv6.domain.com are serving the exact same
> content. Typical SEO standards are to only serve good content from a
> single domain so information isn't watered down and so that the
> larger search engines won't penalize. So a big concern is having
> search results take a hit because content is duplicated through two
> different domains, even though one domain is ipv4 only and the other
> is ipv6 only.
> 
> 2) Not running ipv6 natively, or using 6to4. 
> This (potentially) increases hop count and will put content on a
> slower GRE tunnel and add some additional time for page load times. 
> 
> 3) ??? Any others that I haven't thought of ???

If you are so concerned about SEO, just dual-stack your site.  It works
well for me.

William