Fails to fetch packages in proxy-only environment

[Eduard Bloch]

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!

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.