[139173] in North American Network Operators' Group

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RE: IPv6 SEO implecations?

daemon@ATHENA.MIT.EDU (Nathan Eisenberg)
Mon Mar 28 19:50:42 2011

From: Nathan Eisenberg <nathan@atlasnetworks.us>
To: "nanog@nanog.org Group" <nanog@nanog.org>
Date: Mon, 28 Mar 2011 23:49:52 +0000
In-Reply-To: <-8656793349984297784@unknownmsgid>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org

> I would be getting ipv6 connectivity, adding an unknown AAAA record such =
as
> ipv6 or www6; but not www, and do as many comparative ipv4 vs
> ipv6 tracerouts from as many route servers as possible. Then you will hav=
e the
> data you need to actually make an informed decision rather than just gues=
sing
> how it will behave. Remove the temp record and add a real quad for www
> only if you liked what you saw.
>=20
> I assume the name servers are also available over ipv6 including glue?

Why do you even need a AAAA record to do that?  Just do a traceroute to the=
 v6 address.  The temporary AAAA record seems to do nothing useful in your =
proposed procedure.

Easiest hack to test site usability:  Modify your hosts file.  Don't even p=
ublish the record in DNS until you're ready.  Then there's no SEO implicati=
ons.  :)

> So far the consensus is to run dual stack natively.
>=20
> While this definitely is the way things should be set up in the end, I ca=
n see
> some valid reasons to run ipv4 and ipv6 on separate domains for a while
> before final configuration. For example, if I'm in an area with poor ipv6
> connectivity I'd like to be given the option of explicitly going to an ip=
v4 site vs
> the ipv6 version.
>=20
> I'd also like to not damage SEO in the process though. ;-)

If you're going to expose the site via a separate hostname (v6.bobdole.com)=
, create a v6.robots.txt file that tells Google not to index v6.bobdole.com=
.  Use an .htaccess rule to rewrite requests for robots.txt based on the ho=
st header, so v4 requests get the v4.robots.txt, and v6 requests get the v6=
.robots.txt, which tells Google not to index things.

Nathan



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