Bug#402645: debian-installer: Shouldn't complain about unavailability of apt archives when network is not configured

[Mike Hommey <mh+reportbug@glandium.org>]

Package: debian-installer
Severity: normal

At network configuration time, you can decide not to configure the
network. But nevertheless, d-i keeps complaining at several occasions
that it can't contact the apt archive: once for the mirrors
configuration, and once for the security archive. While I'm not sure for
the security archive (it's still nice to know that it will be
deactivated), it's quite useless to say the mirror configuration can't
be done due to network not being configured, since well, the user chose
not to configure it.

Mike

-- System Information:
Debian Release: 4.0
  APT prefers unstable
  APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: i386 (i686)
Shell:  /bin/sh linked to /bin/bash
Kernel: Linux 2.6.18-3-686
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)