Bug#243486: apt: no option to disable ipv6

[Michael Schaefer <debian_bts@spamblock.netzgehirn.de>(by way of Michael Schaefer <mfs@gmx.de>)]

Package: apt
Version: 0.5.24
Severity: wishlist

apt should have a global config option to stop it from using IPv6.

I have several machines with IPv6/IPv4 connectivity, but IPv6 is usually much
slower and only for testing purposes. If an apt-source has a
IPv6-DNS-record apt uses IPv6 by default and there's no way to configure
this behaviour....

-- Package-specific info:

-- apt-config dump --

APT "";
APT::Architecture "i386";
APT::Build-Essential "";
APT::Build-Essential:: "build-essential";
Dir "/";
Dir::State "var/lib/apt/";
Dir::State::lists "lists/";
Dir::State::cdroms "cdroms.list";
Dir::State::userstatus "status.user";
Dir::State::status "/var/lib/dpkg/status";
Dir::Cache "var/cache/apt/";
Dir::Cache::archives "archives/";
Dir::Cache::srcpkgcache "srcpkgcache.bin";
Dir::Cache::pkgcache "pkgcache.bin";
Dir::Etc "etc/apt/";
Dir::Etc::sourcelist "sources.list";
Dir::Etc::vendorlist "vendors.list";
Dir::Etc::vendorparts "vendors.list.d";
Dir::Etc::main "apt.conf";
Dir::Etc::parts "apt.conf.d";
Dir::Etc::preferences "preferences";
Dir::Bin "";
Dir::Bin::methods "/usr/lib/apt/methods";
Dir::Bin::dpkg "/usr/bin/dpkg";
DPkg "";
DPkg::Pre-Install-Pkgs "";
DPkg::Pre-Install-Pkgs:: "/usr/sbin/dpkg-preconfigure --apt || true";

-- (no /etc/apt/preferences present) --


-- (/etc/apt/sources.list present, but not submitted) --


-- System Information:
Debian Release: testing/unstable
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing')
Architecture: i386 (i686)
Kernel: Linux 2.6.3-mm4
Locale: LANG=C, LC_CTYPE=C

Versions of packages apt depends on:
ii  libc6                       2.3.2.ds1-11 GNU C Library: Shared libraries
 an ii  libgcc1                     1:3.3.3-6    GCC support library
ii  libstdc++5                  1:3.3.3-6    The GNU Standard C++ Library v3

-- no debconf information