[Bug 877254] Re: Network proxy settings does not keep "DIRECT" value in apt.conf when set back to method "None"

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** Branch linked: lp:ubuntu/oneiric-proposed/ubuntu-system-service

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https://bugs.launchpad.net/bugs/877254

Title:
  Network proxy settings does not keep "DIRECT" value in apt.conf when
  set back to method "None"

Status in “ubuntu-system-service” package in Ubuntu:
  New
Status in “ubuntu-system-service” source package in Oneiric:
  Fix Committed

Bug description:
  Network proxy settings in gnome-control-center removes
  Acquire::*::proxy::HOST "DIRECT" value when set proxy method "None".

  NOTE: Acquire::*::proxy::HOST "DIRECT" works as no_proxy for APT.

  How to reproduce:
    1. open network settings in gnome-control-center
    2. set proxy like the example below:
        * method - manual
        * HTTP Proxy - example.com:8080
        * HTTPS Proxy - example.com:8090
    3. press "Apply system wide"
        - confirm proxy settings are written in /etc/apt/apt.conf
    4. add the line below into /etc/apt/apt.conf manually
        - Acquire::http::proxy::server1.local "DIRECT";
    5. add the line below into /etc/apt/apt.conf.d/90no-proxy.conf
        - Acquire::http::proxy::server2.local "DIRECT";
    6. turn off proxy by set back the Method to "None" and press "Apply system wide" again.

  Expected to happen:
    7. the three lines below are removed from /etc/apt/apt.conf
            - Acquire::http::proxy "http://example.com:8080/";
            - Acquire::https::proxy "http://example.com:8080/";
            - Acquire::ftp::proxy "http://example.com:8080/";
       but leave the lines below in /etc/apt/apt.conf and  /etc/apt/apt.conf.d/90no-proxy.conf as is to be useful for the next time.
            - Acquire::http::proxy::server1.local "DIRECT";
            - Acquire::http::proxy::server2.local "DIRECT";

  What happened instead:
    7. the three lines are removed and also "DIRECT" lines are removed.

  NOTE:
  "Apply system wide" for /etc/environment leave no_proxy value as is.

  ProblemType: BugDistroRelease: Ubuntu 11.10
  Package: gnome-control-center 1:3.2.0-0ubuntu6
  ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
  Uname: Linux 3.0.0-12-generic x86_64
  ApportVersion: 1.23-0ubuntu3
  Architecture: amd64
  CasperVersion: 1.285
  Date: Tue Oct 18 05:07:00 2011
  LiveMediaBuild: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111011)
  ProcEnviron:
   LANG=en_US.UTF-8
   SHELL=/bin/bashSourcePackage: gnome-control-center
  UpgradeStatus: No upgrade log present (probably fresh install)
  usr_lib_gnome-control-center:
   deja-dup           20.0-0ubuntu3
   gnome-bluetooth    3.2.0-0ubuntu1
   indicator-datetime 0.3.0-0ubuntu3

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