apport information

** Attachment added: "CurrentDmesg.txt"
   
https://bugs.launchpad.net/bugs/1624722/+attachment/4742793/+files/CurrentDmesg.txt

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https://bugs.launchpad.net/bugs/1624722

Title:
  DHCPv6 does not work in Hyper-V

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  When using Ubuntu (in this case the live 16.04.1 LTS ISO) as a
  Generation 2 (Gen1 untested) Hyper-V VM, an IPv6 address can't be
  gotten through DHCPv6. dhclient continues to send out solicitations
  but they never result in a response. I've looked on the router end
  (running AdvancedTomato and dnsmasq) and the router is getting the
  requests and is sending out a advertisement, but the VM never gets it.
  Using the exact same live ISO works in VirtualBox so I've convinced it
  is an issue with the Hyper-V network driver or something along those
  lines.

  The only IPv6 address that is configured automatically is the fe80
  link-local address.

  Windows VMs and older Linux VMs (Debian jessie with 3.16 kernel) work
  just fine and receive an IPv6 via DHCPv6.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-31-generic 4.4.0-31.50
  ProcVersionSignature: Ubuntu 4.4.0-31.50-generic 4.4.13
  Uname: Linux 4.4.0-31-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.1
  Architecture: amd64
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', 
'/dev/snd/timer'] failed with exit code 1:
  CasperVersion: 1.376
  CurrentDesktop: Unity
  Date: Sat Sep 17 19:56:42 2016
  IwConfig:
   lo        no wireless extensions.
   
   eth0      no wireless extensions.
  LiveMediaBuild: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
  Lspci:
   
  Lsusb: Error: command ['lsusb'] failed with exit code 1:
  MachineType: Microsoft Corporation Virtual Machine
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 hyperv_fb
  ProcKernelCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi 
file=/cdrom/preseed/username.seed boot=casper quiet splash ---
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-31-generic N/A
   linux-backports-modules-4.4.0-31-generic  N/A
   linux-firmware                            1.157.2
  RfKill:
   
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 11/26/2012
  dmi.bios.vendor: Microsoft Corporation
  dmi.bios.version: Hyper-V UEFI Release v1.0
  dmi.board.asset.tag: None
  dmi.board.name: Virtual Machine
  dmi.board.vendor: Microsoft Corporation
  dmi.board.version: Hyper-V UEFI Release v1.0
  dmi.chassis.asset.tag: 5808-9631-9266-5991-2472-7695-55
  dmi.chassis.type: 3
  dmi.chassis.vendor: Microsoft Corporation
  dmi.chassis.version: Hyper-V UEFI Release v1.0
  dmi.modalias: 
dmi:bvnMicrosoftCorporation:bvrHyper-VUEFIReleasev1.0:bd11/26/2012:svnMicrosoftCorporation:pnVirtualMachine:pvrHyper-VUEFIReleasev1.0:rvnMicrosoftCorporation:rnVirtualMachine:rvrHyper-VUEFIReleasev1.0:cvnMicrosoftCorporation:ct3:cvrHyper-VUEFIReleasev1.0:
  dmi.product.name: Virtual Machine
  dmi.product.version: Hyper-V UEFI Release v1.0
  dmi.sys.vendor: Microsoft Corporation
  --- 
  ApportVersion: 2.20.1-0ubuntu2.1
  Architecture: amd64
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', 
'/dev/snd/timer'] failed with exit code 1:
  CasperVersion: 1.376
  CurrentDesktop: Unity
  DistroRelease: Ubuntu 16.04
  IwConfig:
   lo        no wireless extensions.
   
   eth0      no wireless extensions.
  LiveMediaBuild: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
  Lspci:
   
  Lsusb: Error: command ['lsusb'] failed with exit code 1:
  MachineType: Microsoft Corporation Virtual Machine
  Package: linux (not installed)
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 hyperv_fb
  ProcKernelCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi 
file=/cdrom/preseed/username.seed boot=casper quiet splash ---
  ProcVersionSignature: Ubuntu 4.4.0-31.50-generic 4.4.13
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-31-generic N/A
   linux-backports-modules-4.4.0-31-generic  N/A
   linux-firmware                            1.157.2
  RfKill:
   
  Tags:  xenial
  Uname: Linux 4.4.0-31-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 11/26/2012
  dmi.bios.vendor: Microsoft Corporation
  dmi.bios.version: Hyper-V UEFI Release v1.0
  dmi.board.asset.tag: None
  dmi.board.name: Virtual Machine
  dmi.board.vendor: Microsoft Corporation
  dmi.board.version: Hyper-V UEFI Release v1.0
  dmi.chassis.asset.tag: 5808-9631-9266-5991-2472-7695-55
  dmi.chassis.type: 3
  dmi.chassis.vendor: Microsoft Corporation
  dmi.chassis.version: Hyper-V UEFI Release v1.0
  dmi.modalias: 
dmi:bvnMicrosoftCorporation:bvrHyper-VUEFIReleasev1.0:bd11/26/2012:svnMicrosoftCorporation:pnVirtualMachine:pvrHyper-VUEFIReleasev1.0:rvnMicrosoftCorporation:rnVirtualMachine:rvrHyper-VUEFIReleasev1.0:cvnMicrosoftCorporation:ct3:cvrHyper-VUEFIReleasev1.0:
  dmi.product.name: Virtual Machine
  dmi.product.version: Hyper-V UEFI Release v1.0
  dmi.sys.vendor: Microsoft Corporation

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