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[Andreas Schildbach <launchpad.net@xxxxxxxxxxxxx>]

Does anyone have instructions for how to configure this by hand on a
desktop Ubuntu vivid or wily installation?

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https://bugs.launchpad.net/bugs/995332

Title:
  Please enhance NetworkManager such that DNSSEC validation is done
  whenever possible

Status in dnsmasq package in Ubuntu:
  Invalid
Status in network-manager package in Ubuntu:
  Triaged

Bug description:
  Network Manager in Precise uses a local forwarding DNS server
  (dnsmasq).  This does not perform DNSSEC validation, although it is
  configured to proxy the DNSSEC validation result from the upstream
  server, for which the manpage mentions the following caveat:

  "You should only do this if you trust all the configured upstream
  nameservers and the network between you and them."

  Since not all networks or upstream DNS servers are trustworthy, the
  safest place to perform DNSSEC validation is on the client.  Using a
  local DNS server which cannot validate is a missed opportunity; by
  replacing dnsmasq with a more-capable DNS server (e.g. Unbound)
  security against DNS poisoning and MITM attacks could be improved.

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