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[Thiago Martins <thiagocmartinsc@xxxxxxxxx>]

Søren,

I don't think this is a "d-conf" fault... Since it is writing the
configuration... The problem, apparently, is with the Ubuntu itself,
that is ignoring that configuration, so, this affects the "distro" as a
whole.

Ubuntu NEEDs a much better Proxy Settings under "System Settings" =>
"Network" => "Network Proxy". Even Windows XP have a better Proxy
configuration than Trusty, this is a shame for us...   :'(

Don't you think?!

Cheers!
Thiago

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https://bugs.launchpad.net/bugs/1295003

Title:
  Ubuntu does not honor “ignore-hosts” proxy settings for IPv6

Status in “d-conf” package in Ubuntu:
  New

Bug description:
  I just typed under "dconf-editor", System → Proxy → ignore-hosts, the
  following content:

  ['localhost', '127.0.0.0/8', '::1', '192.168.0.1', '2000::/3',
  'fc00::/8']

  But, Google Chrome (and apt-get update / upgrade) is just ignoring
  this settings.

  Also, Firefox doesn't honor the `ingore-hosts` settings, even
  configuring it to "Use system proxy settings".

  For example, my Proxy Server (Ubuntu with Squid3) is in dual-stacked
  mode BUT, I do NOT want to access IPv6 web sites through the Proxy,
  that's why I'm trying to ignore the entire IPv6 Internet with the
  entry 2000::/3 above, but, it does not work as expected.

  BTW, I don't need the proxy to access Hyperboria sites, which resides
  under fc00::/8 (local / private subnet) but, it doesn't work either...

  Why I'm doing this?

  Because my environment is already a IPv6-Only Network and, to access
  the old internet infrastructure (IPv4-Only), I need to go through the
  dual-stacked proxy. But I need the proxy only when a web site doesn't
  have IPv6...

  How can I know that it doesn't work?!

  It is simple, just access a web site that shows a IPv6 address on it,
  for example, http://www.sixxs.net or http://ipv6.whatismyv6.com, then,
  I'm still seeing the IPv6 address of the Proxy Server, so, "ignore-
  hosts entry '2000::/3'" doesn't seem to be working.

  Plus, when I'm trying to access a Hyperboria website, Squid returns an
  error that it can not reach `fc00::/8` network

  (Squid ERROR: (101) Network is unreachable)

  ...of course it can't, the cjdns router is running right on my Ubuntu
  Desktop, so, no need to go through proxy when browsing Hyperboria
  fc00::/8 but, Ubuntu isn't honoring ignore-hosts under proxy settings.

  Please guys, Linux is a O.S. built for networks! How can "Ubuntu Proxy
  Setup" be so simplistic?! And it doesn't even work!

  I already tried askubuntu.com but, no answer there, look:
  http://askubuntu.com/questions/435163/how-to-make-ubuntu-honor-ignore-
  hosts-proxy-settings-for-ipv6

  I really appreciate any help! This is a serious problem.

  Thanks!
  Thiago

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