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[nmeier <nmeier@xxxxxxxxxxxxx>]

Typo - the above patch was accepted into the ACPI tree.

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https://bugs.launchpad.net/bugs/1440072

Title:
  [Hyper-V] Legacy network adapter is not detected

Status in Linux:
  Unknown
Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Vivid:
  In Progress

Bug description:
  Issue description:
  Attaching a Legacy network adapter to a VM will not be detected on the VM side.
  This is not the case with synthetic adapters, which are properly identified.

  Steps to Reproduce: 
  1.     Add a Legacy Network adapter to the VM
  2.     Boot the vm
  3.     Verify the identified network adapter, the legacy NIC is missing

  Versions details:
  Windows Server Host Edition: Microsoft Windows Server 2012 R2 Datacenter build 9600 and Microsoft Windows Server 2008 R2 Standard  SP 1 build 7601
  Distribution name and release: Ubuntu Vivid Vervet
  Kernel version: Linux ubuntu31 3.19.0-11-generic #11lp14233432v201504021617 SMP

  
  Hyper-V side:
  PS> Get-VMNetworkAdapter -VMName vivid1

  Name                   IsManagementOs VMName SwitchName MacAddress   Status IPAddresses
  ----                   -------------- ------ ---------- ----------   ------ -----------
  Network Adapter        False          vivid1 external   00155D06332D {Ok}   {IP, fe80::215:5dff:fe06:332d}
  Legacy Network Adapter False          vivid1 external   00155D063336 {Ok}   {}

  On the VM Side:
  root@ubuntu31:~# ls /sys/class/net/
  eth0  lo

  eth0 has the MAC of the Network Adapter, which is the synthetic
  interface.

  This has been verified with also 1 vCPU or with irqbalancer daemon disabled, as that is a common requirements when using legacy adapters.
  --- 
  AlsaDevices:
   total 0
   crw-rw---- 1 root audio 116,  1 May  6 08:17 seq
   crw-rw---- 1 root audio 116, 33 May  6 08:17 timer
  AplayDevices: Error: [Errno 2] No such file or directory
  ApportVersion: 2.17.2-0ubuntu1
  Architecture: amd64
  ArecordDevices: Error: [Errno 2] No such file or directory
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  DistroRelease: Ubuntu 15.04
  HibernationDevice: RESUME=/dev/mapper/ubuntu1504--vg-swap_1
  InstallationDate: Installed on 2015-04-23 (12 days ago)
  InstallationMedia: Ubuntu-Server 15.04 "Vivid Vervet" - Release amd64 (20150422)
  IwConfig:
   eth0      no wireless extensions.
   
   lo        no wireless extensions.
  Lsusb: Error: command ['lsusb'] failed with exit code 1: unable to initialize libusb: -99
  MachineType: Microsoft Corporation Virtual Machine
  Package: linux (not installed)
  PciMultimedia:
   
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 hyperv_fb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.19.0-15-generic root=/dev/mapper/hostname--vg-root ro crashkernel=384M-:128M console=tty0 console=ttyS1
  ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3
  RelatedPackageVersions:
   linux-restricted-modules-3.19.0-15-generic N/A
   linux-backports-modules-3.19.0-15-generic  N/A
   linux-firmware                             1.143
  RfKill: Error: [Errno 2] No such file or directory
  Tags:  vivid
  UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
  Uname: Linux 3.19.0-15-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:
   
  _MarkForUpload: True
  dmi.bios.date: 05/23/2012
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 090006
  dmi.board.name: Virtual Machine
  dmi.board.vendor: Microsoft Corporation
  dmi.board.version: 7.0
  dmi.chassis.asset.tag: 6473-7986-1993-5777-7899-0719-77
  dmi.chassis.type: 3
  dmi.chassis.vendor: Microsoft Corporation
  dmi.chassis.version: 7.0
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr090006:bd05/23/2012:svnMicrosoftCorporation:pnVirtualMachine:pvr7.0:rvnMicrosoftCorporation:rnVirtualMachine:rvr7.0:cvnMicrosoftCorporation:ct3:cvr7.0:
  dmi.product.name: Virtual Machine
  dmi.product.version: 7.0
  dmi.sys.vendor: Microsoft Corporation

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