[Bug 1590689] Re: MAAS 1.9.3 + Juju 1.25.5 - on the Juju controller node eth0 and juju-br0 interfaces have the same IP address at the same time

[Ante Karamatić]

After some discussion on Hangout between Andrew, Dimiter and myself, we
realized that ifenslave in Trusty is not compatible with kernel 3.13 nor
ifupdown version from Trusty.

So, this would mean that bonding in 14.04 is in general broken.

Bugs:

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=742410
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=791906

** Bug watch added: Debian Bug tracker #742410
   http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=742410

** Bug watch added: Debian Bug tracker #791906
   http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=791906

** Also affects: ifenslave (Ubuntu)
   Importance: Undecided
       Status: New

** Changed in: ifenslave (Ubuntu)
   Importance: Undecided => High

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https://bugs.launchpad.net/bugs/1590689

Title:
  MAAS 1.9.3 + Juju 1.25.5 - on the Juju controller node eth0 and juju-
  br0 interfaces have the same IP address at the same time

Status in juju-core:
  Fix Released
Status in juju-core 1.25 series:
  In Progress
Status in MAAS:
  Confirmed
Status in ifenslave package in Ubuntu:
  New

Bug description:
  Running MAAS 1.9.3 - Juju 1.25.5 - Ubuntu 14.04.04

  After a Juju bootstrap the Juju controller node remains with both the
  eth0 and the juju-br0 interfaces set at the same time and with the
  same IP.

  eth0 is defined in ENI as manual but also in interfaces.d/eth0.cfg as
  DHCP

  juju-br0 is defined in ENI as static and with the same eth0 IP

  It seems Juju rewrites /etc/network/interfaces, but doesn't
  remove/change /etc/network/interfaces.d/eth0.cfg. This results in one
  interface defined twice.

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