[Bug 974218] Re: Ifenslave-2.6 problem in ubuntu 12;04 precise

[Robie Basak]

Thank you for taking the time to report this bug and helping to make
Ubuntu better.

The format of /etc/network/interfaces for bonding interfaces appears to
have changed in order to avoid a race condition. I think you might be
falling on the wrong side of the race. Please see
/usr/share/doc/ifenslave-2.6/README.Debian.gz, or online at:

http://bazaar.launchpad.net/~ubuntu-
branches/ubuntu/precise/ifenslave-2.6/precise/view/head:/debian/README.Debian
(line 39).

I think the real bug here is that there is no automatic upgrade path
regarding this change, or documentation in a place that users can spot
before upgrading.

Unfortunately I think it's too risky to try and add an automatic upgrade
path this close to release as it would not receive sufficient testing.
The workaround is to fix up /etc/network/interfaces to the latest syntax
by hand.

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https://bugs.launchpad.net/bugs/974218

Title:
  Ifenslave-2.6 problem in ubuntu 12;04 precise

Status in “ifenslave-2.6” package in Ubuntu:
  Confirmed

Bug description:
  Hi,

  I use ubuntu in my server, i have two interfaces bonds connected,
  bond0 -> eth2 and eth3
  bond1 -> eth3 and eth4

  In old versions the package ifenslave, my interface bound, works
  without problems

  But in latest version the package ( 1.1.0-19ubuntu5 ) , the interface
  up but not ping.

  Now i use version ifenslave-2.6 (1.1.0-19ubuntu1) and my interfaces
  works without problems.

  My archive :
  /etc/init.d/network/interfaces :

  auto bond0
  iface bond0 inet static
     pre-up ip link set eth2 up
     pre-up ip link set eth3 up
     address 192.168.0.2
     broadcast 192.168.0.255
     post-up ifconfig bond0 mtu 9000
     netmask 255.255.255.0
     slaves eth2 eth3
     bond_mode broadcast
     bond_miimon 100
     bond_updelay 200
     bond_downdelay 500
     bond_usecarrier 1
  auto bond1
  iface bond1 inet static
     broadcast 192.168.1.255
     address 192.168.2.2
     pre-up ip link set eth4 up
     pre-up ip link set eth5 up
     netmask 255.255.255.0
     post-up ifconfig bond1 mtu 9000
     slaves eth4 eth5
     bond_mode broadcast
     bond_miimon 100
     bond_updelay 200
     bond_downdelay 500
     bond_usecarrier 1

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