----- Original Message ----- From: "Risker" <risker...@gmail.com>
To: "Wikimedia Mailing List" <wikimedia-l@lists.wikimedia.org>
Sent: Friday, June 01, 2012 11:11 PM
Subject: Re: [Wikimedia-l] Update on IPv6

On 1 June 2012 17:12, Erik Moeller <e...@wikimedia.org> wrote:

Hi all,

June 6, 2012 is IPv6 Day ( http://www.worldipv6day.org/ ). The goal of
this global event is to move more ISPs, equipment manufacturers and
web services to permanent adoption of IPv6.

We're planning to do limited production testing of IPv6 during the
Berlin Hackathon 2012 (June 2-3). Provided that the number of issues
we encounter are manageable, we may fully enable IPv6 on IPv6 day, and
keep it enabled.

MediaWiki has been used with IPv6 by third party wikis for some time.
Wikimedia uses a set of additional features (GlobalBlocking,
CheckUser, etc.) which weren't fully IPv6-ready until recently. In
addition, we're working to ensure that all of Wikimedia's various
services (mailing lists, blogs, etc.) are IPv6-ready.

== What's the user impact going to be? ==

At least in the June 2-3, 2012 time window, you may see a small number
of edits from IPv6 addresses, which are in the form
"2001:0db8:85a3:0000:0000:8a2e:0370:7334". See [[w:IPv6 address]].

These addresses should behave as any other IP adress would: You can
leave messages on their talk pages; you can track their contributions;
you can block them. CIDR notation is supported for rangeblocks.

An important note about blocking: A single user may have access to a
much larger number of addresses than in the IPv4 model. This means
that range blocks (e.g. address with "/64") have to be applied in more
cases to prevent abuse by more sophisticated users.

In the mid term, user scripts and tools that use simple regular
expressions to match IPv4 addresses will need to be adapted for IPv6
support to behave correctly. We suspect that IPv6 usage is going to be
very low initially, meaning that abuse should be manageable, and we
will assist in the monitoring of the situation.

User:Jasper Deng is maintaining a comprehensive analysis of the long
term implications of the IPv6 migration here:

We've set up a test wiki where you can see IPv6 IP addresses. This
works by assigning you a fake IPv6 address the moment you visit the
wiki, and allows you to see the behavior of various tools with the new
address format:

The best way to report issues is to register them in Bugzilla and to
ensure that they are marked as blockers for the IPv6 tracking bug:

We'll post updates to wikitech-l and elsewhere as appropriate.

All best,

Erik, as I am sure has been conveyed to you, some very serious concerns
have been identified with respect to this from the checkuser corps (and I
mean  the global level, not just one or two projects).  In particular, the
lack of notification, the inability to suddenly redevelop hundreds of tools
and scripts that are not IPv6-friendly, and the fact that there is
significant uncertainty as to exactly how various standard tools such as
CheckUser and Block actually will work, all mitigate against a full,

The word is "militate". To mitigate is to lessen the effect of something.

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