Ask Ubuntu is a question and answer site for Ubuntu users and developers. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I have been doing Ubuntu deployment using a preseed.cfg. After becoming comfortable with the packages being installed it was time to reduce download time and internet traffic by creating a mirror. I ended up doing a "partial mirror" using apt-cacher-ng and preseeding it by adding

d-i mirror/http/proxy string http://mymirror

to the preseed.cfg. This is where things got strange. I have a few .debs that I run as part of preseed/late_command by wgetting them and installing them with dpkg -i. The packages were installing without issue until added the proxy. With the proxy they fail to install. So does the proxy affect installing .debs during preseeded installation?

share|improve this question

It turns out that this was an issue with some of additional files being downloaded using ASCII as opposed to binary and becoming corrupted.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.