[Bug 1260855] Re: http://start.ubuntu.com/connectivity-check.html is not accessible over IPv6 (no internet connectivity in ubiquity)

[Dimitri John Ledkov]

Ubiquity installer uses the following services:

* http://start.ubuntu.com/connectivity-check.html
* archive / ports country mirrors
* http://geoip.ubuntu.com/lookup
* http://geoname-lookup.ubuntu.com


If the first one is not available, then ubiquity assumes there is no network connectivity and therefore other anonymous services are not used.

* langpack fetching / installation
* apt cache refresh
* downloading updates and drivers
* guessing installation location at timezone selection step
* predicting location names at timezone selection step

I have filed an RT to get those services enabled over IPv6

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https://bugs.launchpad.net/bugs/1260855

Title:
  http://start.ubuntu.com/connectivity-check.html is not accessible over
  IPv6 (no internet connectivity in ubiquity)

Status in “ubiquity” package in Ubuntu:
  Triaged

Bug description:
  When installing on an IPv6 only network, the installer incorrectly
  reports that no Internet connectivity is available.

  Steps to reproduce:
  - Download desktop ISO. I used http://cdimage.ubuntu.com/xubuntu/daily-live/current/trusty-desktop-amd64.iso current at Fri Dec 13 15:00 EST
  - Boot ISO on a computer where only IPv6 connectivity is available
  - Choose Install Xubuntu
  - Choose language

  Results:
  - At "Preparing to install Xubuntu screen" it states
    For best results, please ensure that this computer:
    ✓ has at least 5.5GB available drive space
    ✕ is connected to the Internet

  Expected results:
  - A checkmark next to "is connected to the internet"

  The install is able to complete from the ISO. Once the installed
  machine is booted, updates are able to be applied indicating Internet
  connectivity is indeed available.

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