During installation, flashplugin fails to install with: IOError: [Errno socket error] [Errno -2] Name or service not known

Quantal Desktop 20120920

I'm filing this bug against Ubiquity not update-notifier because it occurs only during installation, the hook works correctly after installation.

If the user selects to installation 3rd party software during installation with network fully operational, flashplugin fails to download with the following error:
 Processing triggers for update-notifier-common ...
 Traceback (most recent call last):
   File "/usr/lib/update-notifier/package-data-downloader", line 234, in process_download_requests
     dest_file = urllib.urlretrieve(files[i])[0]
   File "/usr/lib/python2.7/urllib.py", line 93, in urlretrieve
     return _urlopener.retrieve(url, filename, reporthook, data)
   File "/usr/lib/python2.7/urllib.py", line 239, in retrieve
     fp = self.open(url, data)
   File "/usr/lib/python2.7/urllib.py", line 207, in open
     return getattr(self, name)(url)
   File "/usr/lib/python2.7/urllib.py", line 344, in open_http
     h.endheaders(data)
   File "/usr/lib/python2.7/httplib.py", line 958, in endheaders
     self._send_output(message_body)
   File "/usr/lib/python2.7/httplib.py", line 818, in _send_output
     self.send(msg)
   File "/usr/lib/python2.7/httplib.py", line 780, in send
     self.connect()
   File "/usr/lib/python2.7/httplib.py", line 761, in connect
     self.timeout, self.source_address)
   File "/usr/lib/python2.7/socket.py", line 553, in create_connection
     for res in getaddrinfo(host, port, 0, SOCK_STREAM):
 IOError: [Errno socket error] [Errno -2] Name or service not known
 flashplugin-installer: downloading http://archive.canonical.com/pool/partner/a/adobe-flashplugin/adobe-flashplugin_11.2.202.238.orig.tar.gz

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: ubiquity (not installed)
ProcVersionSignature: Ubuntu 3.5.0-15.22-generic 3.5.4
Uname: Linux 3.5.0-15-generic x86_64
ApportVersion: 2.5.2-0ubuntu4
Architecture: amd64
Date: Mon Sep 24 09:00:33 2012
InstallCmdLine: file=/cdrom/preseed/ubuntu.seed boot=casper initrd=/casper/initrd.lz quiet splash -- maybe-ubiquity
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Beta amd64 (20120923)
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)