IPv6 for country mirrors

[Vivien GUEANT - LaFibre.info]

Hello,

I propose to put in the prerequisites of "country mirror" to offer IPv6 
starting from January 1, 2021.

There are relatively few countries where the default server does not 
offer IPv6, this concerns 18 countries: Azerbaijan, Belarus, Costa Rica, 
Croatia, Estonia, Georgia, Germany, Greenland, Japan, Kuwait, Latvia, 
Nepal, Portugal, Romania, Serbia, Turkey, Ukraine and Uzbekistan.

This is very surprising for Germany, a country where there are ten 
mirrors with 10 Gbps (they all offer IPv6 except two).

If a mirror does not offer IPv6 on January 2021, I suggest to replace it 
by another voluntary host which offers IPv6 or by Canonical servers, 
already used as "country mirror" in many countries (United States, 
Canada, Mexico, China, United Kingdom, Spain, Hungary, Czech Republic,...)

Statistics on the "country mirror" are attached.

The absence of IPv6 is blocking for servers that no longer have IPv4 
connectivity, as Michael Hock explains :

Le 03/05/2020 à 15:56, Michael Hock a écrit :
> Hi all,
>
> I hope this is the right place to discuss this.
> I'm responsible for a couple of hundred servers which run ubuntu 
> server 16.04/18.04/20.04. Also there are many virtual machines 
> running, including databases, webservers, monitoring, ... but most of 
> them only have IPv6 connectivity to the public internet. As all of you 
> might know, for leased IPv4 addresses you usually have to pay some 
> money and for many (internal) services IPv4 is just not needed any more.
>
> So the problem here is, most of the country specific ubuntu mirrors 
> are not IPv6 enabled. So what are we doing? In our head location we 
> use IPv4 NAT (country mirror not providing IPv6 there), in remote 
> locations "just use the US mirror, it has IPv6".
>
> Would it be possible to provide sort of a fallback IPv6 address for 
> all the country specific mirrors, so it would at least work if there 
> is only IPv6 connectivity to the public internet?
> Reaching out to individual mirror operators was not successful (tried 
> to contact a few, they're not seeing it in their responsibility to 
> provide IPv6 connectivity to their mirrors).
>
> I would provide a couple of IPv6 only mirrors for some locations by 
> myself, but of course it's impossible for me to provide mirrors for 
> every country.
> So I hope there are more people willing to either upgrade their 
> current mirrors to also provide IPv6, or to set up additional (IPv6 
> only) mirrors which are then added as DNS AAAA records to existing 
> country specific mirrors.
>
> Looking forward to hear your opinion on this.

Best regards,
Vivien GUEANT (not a Canonical employee, just a mirror operator of 
fr.archive.ubuntu.com)
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