[Bug 1315741] Re: After upgrading from 12.04 to 14.04, network manager puts 127.0.0.1 instead of 127.0.1.1 in resolv.conf

[Thomas Hood]

Can you find the "nameserver 127.0.0.1" line in one of the files in
/etc/resolvconf/resolv.conf.d/ or /run/resolvconf/interface ?

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Title:
  After upgrading from 12.04 to 14.04, network manager puts 127.0.0.1
  instead of 127.0.1.1 in resolv.conf

Status in “resolvconf” package in Ubuntu:
  New

Bug description:
  I upgraded from 12.04 to 14.04 and found that I had no DNS. After a
  little searching I noticed that dnsmasq, as started by Network
  Manager, was listening on 127.0.1.1, yet /etc/resolv.conf was being
  auto-populated with 127.0.0.1, so DNS lookups were failing.

  Manually adding 127.0.1.1 to /etc/resolv.conf lets DNS work until the
  network state changes, then it gets overwritten again with 127.0.0.1.

  I've worked around the issue by adding "nameserver 127.0.1.1" to
  /etc/resolvconf/resolv.conf.d/head and restarting network-manager.
  Something left over from 12.04 is apparently still causing 127.0.0.1
  to be written instead of 127.0.1.1.

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