Submitted merge proposal for livecd-rootfs and uploaded proposed SRU.

** Description changed:

+ SRU Justification
+ 
+ [IMPACT] Cloud images produced by livecd-rootfs are not accessable when
+ presented with certain NICS such as ixgbevf used on HVM instances for
+ AWS.
+ 
+ [CAUSE] Changes in default device naming in 15.10 causes some devices to
+ be named at boot time and are not predicatable, i.e. instead of "eth0"
+ being the first NIC, "ens3" might be used.
+ 
+ [FIX] Boot instances with "net.ifnames=0". This change reverts to the
+ old device naming conventions. As a fix, this is the most appropriate
+ since the cloud images configure the first NIC for DHCP.
+ 
+ [TEST CASE1]:
+ - Build image from -proposed
+ - Boot image in KVM, i.e:
+   $ qemu-system-x86_64 \
+    -smp 2 -m 1024 -machine accel=kvm \
+    -drive file=build.img,if=virtio,bus=0,cache=unsafe,unit=0,snapshot=on \
+    -net nic,model=rtl8139
+ - Confirm that image has "eth0"
+ 
+ [TEST CASE2]:
+ - Build image from -proposed
+ - Publish image to AWS as HVM w/ SRIOV enabled
+ - Confirm that instance boots and is accessable via SSH
+ 
+ [ORIGINAL REPORT]
+ 
  I've made several attempts to launch a c4.xlarge and c4.8xlarge
  instances using Ubuntu 15.10 Wily but am unable to ping the instance
  after it has started running. The console shows that the instance
  reachability check failed.
  
  I am able to successfully launch c4.xlarge instances using Ubuntu 14.04
  and t2.large instances using Ubuntu 15.10.
  
  I've tried with both of these instance AMIs:
  
  ubuntu/images/hvm-ssd/ubuntu-wily-15.10-amd64-server-20151021 - ami-225ebd11
  ubuntu/images-testing/hvm-ssd/ubuntu-wily-daily-amd64-server-20151026 - 
ami-ea20cdd9
  
  Might there be a problem with the Ubuntu Kernel in 15.10 for the c4
  instances?
  
  Looking at the system log it seems that the network never comes up:
  
  [  140.699509] cloud-init[1469]: 2015-10-26 20:45:49,887 -
  url_helper.py[WARNING]: Calling 'http://169.254.169.254/2009-04-04/meta-
  data/instance-id' failed [0/120s]: request error [('Connection
  aborted.', OSError(101, 'Network is unreachable'))]
  
- 
- Thread at AWS forums: 
https://forums.aws.amazon.com/thread.jspa?threadID=218656
+ Thread at AWS forums:
+ https://forums.aws.amazon.com/thread.jspa?threadID=218656

** Attachment added: "Proposed upload for SRU"
   
https://bugs.launchpad.net/ubuntu/+source/livecd-rootfs/+bug/1510345/+attachment/4508495/+files/livecd-rootfs_2.349.1-src-deb.tar

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https://bugs.launchpad.net/bugs/1510345

Title:
  Network is unreachable Wily ec2 c4 instance family

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