[Bug 819577] [NEW] Unable to upgrade to version 11.04 from 10.10

[hockeyshaun]

Public bug reported:

Below is the error received from the update manager when attempting to
upgrade.

W:Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/natty/Release.gpg  Something wicked happened resolving 'us.archive.ubuntu.com:http' (-5 - No address associated with hostname)
, W:Failed to fetch http://archive.canonical.com/ubuntu/dists/natty/Release.gpg  Something wicked happened resolving 'archive.canonical.com:http' (-5 - No address associated with hostname)
, E:Some index files failed to download, they have been ignored, or old ones used instead.

** Affects: update-manager (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: distribution-upgrade

** Tags added: distribution-upgrade

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https://bugs.launchpad.net/bugs/819577

Title:
  Unable to upgrade to version 11.04 from 10.10

Status in “update-manager” package in Ubuntu:
  New

Bug description:
  Below is the error received from the update manager when attempting to
  upgrade.

  W:Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/natty/Release.gpg  Something wicked happened resolving 'us.archive.ubuntu.com:http' (-5 - No address associated with hostname)
  , W:Failed to fetch http://archive.canonical.com/ubuntu/dists/natty/Release.gpg  Something wicked happened resolving 'archive.canonical.com:http' (-5 - No address associated with hostname)
  , E:Some index files failed to download, they have been ignored, or old ones used instead.

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