[Bug 1932009] Re: upgrade to 21.04 aborted fatal: unknown configuration directive 'IdentLookups'

[Chris Guiver]

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https://bugs.launchpad.net/bugs/1932009

Title:
  upgrade to 21.04 aborted  fatal: unknown configuration directive
  'IdentLookups'

Status in ubuntu-release-upgrader package in Ubuntu:
  New

Bug description:
  Apparently the new proftpd does not recognize an old entry, or an line
  was added to the config by the upgrade. Commenting the line make the
  problem go away (but how do I continue the upgrade?)

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