[Bug 1657567] Update Released

[Steve Langasek]

The verification of the Stable Release Update for apt has completed
successfully and the package has now been released to -updates.
Subsequently, the Ubuntu Stable Release Updates Team is being
unsubscribed and will not receive messages about this bug report.  In
the event that you encounter a regression using the package from
-updates please report a new bug using ubuntu-bug and tag the bug report
regression-update so we can easily find any regressions.

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https://bugs.launchpad.net/bugs/1657567

Title:
  "Content-Range: */<file size>" on non-416 responses considered invalid

Status in apt package in Ubuntu:
  Fix Released
Status in apt source package in Xenial:
  Fix Committed
Status in apt source package in Yakkety:
  Fix Released

Bug description:
  APT only allows Content-Range: */<filesize> to be specified on a 416
  response. Sourceforge sometimes replies with that in a 302 redirect.

  We should probably just accept and silently ignore that content-range
  field for other values.

  [Impact]
  Issue breaks and other services that respond with a Content-Range header in a 302 redirect, or any non 416 one.

  [Test Case]
  Run

  /usr/lib/apt/apt-helper download-file -o debug::acquire::http=1
  http://www.jak-software.de/lp1657567 ubuntu.iso

  Before:

  E: Failed to fetch http://www.jak-software.de/lp1657567  The HTTP
  server sent an invalid Content-Range header Bad header data

  After:

  Redirect is followed successfully and a zesty live image is being
  downloaded.

  [Regression Potential]
  None

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