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[Steve Langasek <steve.langasek@xxxxxxxxxxxxx>]

/etc/resolvconf/interface-order is only supposed to determine the order
in which interfaces are preferred as sources of DNS configuration, it
should certainly not cause the DNS servers for an interface to be
ignored completely.  Please attach your full /etc/network/interfaces, as
well as the contents of the /run/resolvconf directory (in particular,
the /run/resolvconf/interface subdirectory).

** Changed in: resolvconf (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1384394

Title:
  /etc/network/interfaces: "dns-nameservers" entries for bridge "br*"
  interfaces are ignored i.e. they are not listed in "/etc/resolv.conf"
  when invoking "ifup" command

Status in “resolvconf” package in Ubuntu:
  Incomplete

Bug description:
  lsb_release -rd
  Description:	Ubuntu 14.04.1 LTS
  Release:	14.04

  apt-cache policy resolvconf
  resolvconf:
    Installed: 1.69ubuntu1.1
    Candidate: 1.69ubuntu1.1
    Version table:
   *** 1.69ubuntu1.1 0
          500 http://ch.archive.ubuntu.com/ubuntu/ trusty-updates/main amd64 Packages
          100 /var/lib/dpkg/status
       1.69ubuntu1 0
          500 http://ch.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages

  DESCRIPTION:
  network-manager: My "eth0" and "wlan0" cards are managed by the network-manager and this works fine.

  /etc/network/interfaces: My 2 bridges "br0" and "br1" are managed in "/etc/network/interfaces" as follows:
  ...
  iface br0 inet static
   address 192.168.10.1
   netmask 255.255.255.0
   dns-nameservers 192.168.10.2
   bridge_ports none
   bridge_stp off
   bridge_fd 0
   bridge_maxwait 0

  iface br1 inet static
   address 192.168.0.1
   netmask 255.255.255.0
   dns-nameservers 192.168.0.2
   bridge_ports none
   bridge_stp off
   bridge_fd 0
   bridge_maxwait 0
  ...

  When I now bring up the bridge interfaces using:
  sudo ifup br0 br1
  Then they show up fine in "ifconfig".
  BUT "dns-nameservers 192.168.10.2" and "dns-nameservers 192.168.0.2" DO NOT show up in "/etc/resolv.conf"

  WORKAROUND: Until this has been fixed the following workaround works fine for me:
  sudo vi /etc/resolvconf/interface-order
  #Add the following entry (this entry can be put on any line BUT it has to come before the last entry "*"):
  ...
  br*
  ...
  *

  PS: Based on the workaround in "/etc/resolvconf/interface-order" I
  think the issue is in package "resolvconf" otherwise I would have
  reported the error against the "ifupdown scripts".

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