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[Søren Laursen <sl@xxxxxxxxxx>]

Looks like a similar bug here, but on HP ProLiant DL380p Gen8:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1213887

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https://bugs.launchpad.net/bugs/1013199

Title:
  be2net driver used by HP BL460c bridge networking not working

Status in “linux” package in Ubuntu:
  Invalid

Bug description:
  When using bridge networking under Ubuntu 12.04 LTS on HP C-Clase Blades (BL460c G7) which uses the be2net driver, networking doesn't work.
  Networking without bridging (assigning an address directly to, say, eth0) does work.

  To recreate

  1. Configure eth0 with an address
  2. Test ping to other server on same network
  3. Works

  Now take down the interface and configure bridging.
  1. /etc/network/interfaces

  # Bridge between eth0 and eth1
  auto br0
  iface br0 inet static
  address 192.168.1.10
  netmask 255.255.255.0
  network 192.168.1.0
  gateway 192.168.1.1
  pre-up ip link set eth0 down
  pre-up brctl addbr br0
  pre-up brctl addif br0 eth0
  pre-up ip addr flush dev eth0
  post-down ip link set eth0 down
  post-down ip link set br0 down
  post-down brctl delif br0 eth0
  post-down brctl delbr br0
  2. Bring br0 up
  3. Ping other server on network
  4. Doesn't work

  
  3.2.0-24-generic #39-Ubuntu SMP Mon May 21 16:52:17 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

  02:00.0 Ethernet controller: Emulex Corporation OneConnect 10Gb NIC (be3) (rev 01)
  02:00.1 Ethernet controller: Emulex Corporation OneConnect 10Gb NIC (be3) (rev 01)
  02:00.2 Ethernet controller: Emulex Corporation OneConnect 10Gb NIC (be3) (rev 01)
  02:00.3 Ethernet controller: Emulex Corporation OneConnect 10Gb NIC (be3) (rev 01)
  02:00.4 Ethernet controller: Emulex Corporation OneConnect 10Gb NIC (be3) (rev 01)
  02:00.5 Ethernet controller: Emulex Corporation OneConnect 10Gb NIC (be3) (rev 01)
  02:00.6 Ethernet controller: Emulex Corporation OneConnect 10Gb NIC (be3) (rev 01)
  02:00.7 Ethernet controller: Emulex Corporation OneConnect 10Gb NIC (be3) (rev 01)

  lsmod | grep be2net
  be2net 78296 0

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: linux-image (not installed)
  ProcVersionSignature: Ubuntu 3.2.0-24.39-generic 3.2.16
  Uname: Linux 3.2.0-24-generic x86_64
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  ApportVersion: 2.0.1-0ubuntu8
  Architecture: amd64
  ArecordDevices:
   **** List of CAPTURE Hardware Devices ****
   card 0: PCH [HDA Intel PCH], device 0: CONEXANT Analog [CONEXANT Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  melmoth    2460 F.... pulseaudio
  CRDA:
   country GB:
   	(2402 - 2482 @ 40), (N/A, 20)
   	(5170 - 5250 @ 40), (N/A, 20)
   	(5250 - 5330 @ 40), (N/A, 20), DFS
   	(5490 - 5710 @ 40), (N/A, 27), DFS
  Card0.Amixer.info:
   Card hw:0 'PCH'/'HDA Intel PCH at 0xf2520000 irq 47'
     Mixer name	: 'Intel CougarPoint HDMI'
     Components	: 'HDA:14f1506e,17aa21da,00100002 HDA:80862805,80860101,00100000'
     Controls      : 26
     Simple ctrls  : 8
  Card29.Amixer.info:
   Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw unknown'
     Mixer name	: 'ThinkPad EC (unknown)'
     Components	: ''
     Controls      : 1
     Simple ctrls  : 1
  Card29.Amixer.values:
   Simple mixer control 'Console',0
     Capabilities: pswitch pswitch-joined penum
     Playback channels: Mono
     Mono: Playback [on]
  Date: Thu Jun 14 16:31:39 2012
  EcryptfsInUse: Yes
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
  MachineType: LENOVO 4287CTO
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-24-generic root=UUID=ffd0d87e-afc2-4ccf-b2ca-0e7f3dd164d3 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.2.0-24-generic N/A
   linux-backports-modules-3.2.0-24-generic  N/A
   linux-firmware                            1.79
  SourcePackage: linux
  StagingDrivers: mei
  UpgradeStatus: Upgraded to precise on 2012-05-14 (31 days ago)
  dmi.bios.date: 11/01/2011
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 8DET55WW (1.25 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 4287CTO
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Available
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvr8DET55WW(1.25):bd11/01/2011:svnLENOVO:pn4287CTO:pvrThinkPadX220:rvnLENOVO:rn4287CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 4287CTO
  dmi.product.version: ThinkPad X220
  dmi.sys.vendor: LENOVO

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