I posted traceroutes for Project Gutenberg and iBiblio on the iBiblio Q&A page I linked to earlier. https://answers.ibiblio.org/questions/1701/cant-connect-to-ibiblio-website-or-gutenbergorg-wh.html
Do you think this could have something to do with the problem? http://help.unc.edu/help/campus-ipv6-policy/ Specifically, the part where they say “We reserve the right to refuse any non-global or non-native (i.e. tunneled) IPv6 address.” Also, the box that’s labeled “Examples of IPv6 addresses that are discouraged:”
From: Greg Newby
Sent: Saturday, July 30, 2016 8:24 PM
To: Paul Tow
Cc: gutvol-w@lists.pglaf.org
Subject: Re: [gutvol-w] Project Gutenberg site not working over IPv6 tunnel
Dear Paul,
Yes, a traceroute would be useful. The reddit discussion shows one of the correct IPv6 addresses (2610:28:3090:3000:0:bad:cafe:47). We use some squid proxies, and serve both http and https. So, there are a few different addresses that may be correct.
We have had no other reports of IPv6 problems. I'm not sure when we implemented it for www.gutenberg.org, but it was within the last year.
Further details are welcome. We'll follow up with ibiblio. The UNC campus (where ibiblio is located) has been found to have some rather aggressive border firewalls and related technologies, and it might be that some traffic is not being passed (as you speculated, with ICMPv6).
Thanks for reporting this.
- Greg Newby
On Sat, Jul 30, 2016 at 02:26:45PM -0500, Paul Tow wrote:
> Yes, I get the same problem with the main iBiblio home page. I had contacted iBiblio as well: https://answers.ibiblio.org/questions/1701/cant-connect-to-ibiblio-website-or-gutenbergorg-wh.html
>
> As of today, two people in the Reddit discussion have said they???ve been able to access Project Gutenberg over their IPv6 tunnel, but I still cannot. One of them said he???s using a tunnel from Hurricane Electric, and the other one hasn???t yet said. I???m using the 6rd tunnel provided automatically by AT&T, and I can???t connect.
>
> I suppose I should provide iBiblio with a traceroute.
>
>
>
> From: Michael Dyck
> Sent: Saturday, July 30, 2016 8:45 AM
> To: gutvol-w@lists.pglaf.org
> Subject: Re: [gutvol-w] Project Gutenberg site not working over IPv6 tunnel
>
> On 16-07-29 11:00 PM, Paul Tow wrote:
> > For a long while now, a technical issue with the Project Gutenberg website
> > has been making it completely inaccessible to a large number of Internet
> > users. [...]
> >
> > - Forum thread I started to figure out this issue with Project Gutenberg:
> > https://www.reddit.com/r/ipv6/comments/4v8ncz/project_gutenberg_not_working_over_ipv6/
>
> www.gutenberg.org is hosted at ibiblio.org. A post near the bottom of the
> reddit thread suggests that this might be an ibiblio-wide problem. Do you
> get the same failure-to-connect behavior for other ibiblio pages?
>
> -Michael
Dr. Gregory B. Newby
Chief Executive and Director
Project Gutenberg Literary Archive Foundation www.gutenberg.org
A 501(c)(3) not-for-profit organization with EIN 64-6221541
gbnewby@pglaf.org