[Bug 1558166] Re: Xenial installer hangs for a long time with "Setting up the clock" message on IPv6-only systems

[Saverio Proto]

I confirm. I noticed that opening an alternate shell and giving commands
will unlock immediately the operation.

Even if it makes no sense I can reproduce it.

The installation is blocked at "getting the time from a network time
server " and typing return on the cancel button has no effect.

I do CTRL+ALT+F2. I click enter to activate a new console. As soon as I
type a command there like "ps" or "ls" the installation immediately
continues on the F1 console.

Note that my system is dual stack IPv4 and IPv6

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https://bugs.launchpad.net/bugs/1558166

Title:
  Xenial installer hangs for a long time with "Setting up the clock"
  message on IPv6-only systems

Status in debian-installer package in Ubuntu:
  Confirmed

Bug description:
  When installing on a IPv6-only system the installer hangs for a long
  time on "Setting up the clock" step with "Getting the time from a
  network time server...". Hitting "Cancel" have no effect.

  Eventually the installer continues, I would guess after a hard
  timeout.

  This is a regression and it has surfaced during the last few days.

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