[Bug 1548092] [NEW] Fails to fetch packages in proxy-only environment

[Eduard Bloch]

Public bug reported:

Hi,

I have a bug report from an Ubuntu user who tries to install with
netboot installer in a LAN behind a proxy (i.e. no direct internet
access). Source: probably http://cdimage.ubuntu.com/netboot/14.04/

The installation works fine in the first steps, you can switch to expert
mode, setup network stuff, select a mirror and specify your local proxy.
>From user POV, it looks like the base system is installed and then the
kernel questions comes. And when you select one, you get an orange
screen saying that there is some general problem.

I could not reproduce the problem first. Then I turned off the default-
route and voila: the pointless error screen emerged! In fact, the
installer apparently hides the bug first - there are download errors
occurred before the kernel question comes up. I could see it for a
split-second because I was watching the log console. But when the error
screen appears, the real error report was already scrolled away from the
log console buffer.

Now please have a look at the log (see attachment). Looks like there is
the port of my proxy (3142), and then an :80 appended, and it tries to
resolve this as a hostname. Why? Doesn't make any sense!

** Affects: debian-installer (Ubuntu)
     Importance: Undecided
         Status: New

** Attachment added: "Installer syslog"
   https://bugs.launchpad.net/bugs/1548092/+attachment/4577323/+files/syslog

** Summary changed:

- Fails to fetch packages after kernel setup
+ Fails to fetch packages in proxy-only environment

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https://bugs.launchpad.net/bugs/1548092

Title:
  Fails to fetch packages in proxy-only environment

Status in debian-installer package in Ubuntu:
  New

Bug description:
  Hi,

  I have a bug report from an Ubuntu user who tries to install with
  netboot installer in a LAN behind a proxy (i.e. no direct internet
  access). Source: probably http://cdimage.ubuntu.com/netboot/14.04/

  The installation works fine in the first steps, you can switch to
  expert mode, setup network stuff, select a mirror and specify your
  local proxy. From user POV, it looks like the base system is installed
  and then the kernel questions comes. And when you select one, you get
  an orange screen saying that there is some general problem.

  I could not reproduce the problem first. Then I turned off the
  default-route and voila: the pointless error screen emerged! In fact,
  the installer apparently hides the bug first - there are download
  errors occurred before the kernel question comes up. I could see it
  for a split-second because I was watching the log console. But when
  the error screen appears, the real error report was already scrolled
  away from the log console buffer.

  Now please have a look at the log (see attachment). Looks like there
  is the port of my proxy (3142), and then an :80 appended, and it tries
  to resolve this as a hostname. Why? Doesn't make any sense!

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