[Bug 1408925] Comment bridged from LTC Bugzilla

[bugproxy]

------- Comment From hellerda at us.ibm.com 2015-01-30 19:26 EDT-------
*** Bug 120790 has been marked as a duplicate of this bug. ***

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https://bugs.launchpad.net/bugs/1408925

Title:
  Netboot installation of Ubuntu 15.04 fails, "The installer failed to
  download a file from the mirror."

Status in debian-installer package in Ubuntu:
  New

Bug description:
  Problem Description 
  =====================
  Cannot perform a netboot installation of Ubuntu 15.04. Shortly after choosing United Kingdom for archive mirror country, then selecting ports.ubuntu.com, and entering our proxy (http://10.33.11.31:3128), the following error message is displayed:

  Download installer components
  The installer failed to download a file from the mirror. This may be 
  a problem with your network, or with the mirror. You can choose to
  retry the download, select a different mirror, or cancel and choose
  another installation method.     

  Downloading a file failed:
  Retry                                     
  Change mirror
  Cancel   

  ---uname output---
  N/A (unable to install)
   
  Machine Type = 8247-22L (PowerKVM guest) 

  Steps to Reproduce
  =============================
  1. ssh to bamkvm (see system access info below)
  2. Run `virsh start --console bu14g1`
  3. Choose the "Install Ubuntu 15.04" option
  4. Proceed through the installer, enter http://10.33.11.31:3128 as the proxy
  5. Observe error
   
  Install method: Netboot via DHCP
   
  Install disk info: QEMU-img raw file stored on a Solstice array
   
  Install ISO Information: vivid-server-ppc64el.iso

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