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[wege <1370018@xxxxxxxxxxxxxxxxxx>]

After further investigation ;) and testing the problem seems a little
bit more clear.

We've installed windows 2012r2  on the same server to be sure not having
a potential hardware problem - !! On windows the  same problem exists !!

Than we changed the switch. At first, there was a netgear 8port
unmanaged switch to a netgear 8+2port managed switch. No problem on
windows neither a problem on linux with the managed switch (Release
Notes Intel Driver - potential problem with unamanaged switches).

No plug/unplug problem, no lost packets and not a wrong packet counter
anymore.

So all fine ? ... allmost

The wrong packet counter and some of the misbehaviour on plug/unplug and
also lost packets seems to come FROM THE SAME NETWORK ON BOTH INTERFACES
!!

Problem configuration 1:
eth0 192.168.86.11/24
eth0:0 172.22.1.81/24

dhcp:
eth1 172.22.1. 243/24

ping test to 172.22.1.81 and 172.22.1. 243
------------------------------------------------------------------
Problem configuration 2:
eth0 172.22.1.81/24

dhcp:
eth1 172.22.1. 243/24

ping test to 172.22.1.81 and 172.22.1. 243
------------------------------------------------------------------
Working configuration:
eth0 192.168.86.11/24

dhcp:
eth1 172.22.1. 243/24

ping test to 192.168.86.11 and 172.22.1. 243

... so there seems to be a general bug left in network stack/logic of
the kernel ...

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https://bugs.launchpad.net/bugs/1370018

Title:
  igb driver does not initialize network cards - no link intel I210
  rev03

Status in “linux” package in Ubuntu:
  Fix Released
Status in “linux” source package in Trusty:
  In Progress
Status in “linux” source package in Utopic:
  Fix Released

Bug description:
  Hi,

  our new server installed with ubuntu 14.04.1 lts updated to the latest
  upstream kernel (Ubuntu 3.13.0-35.62-generic 3.13.11.6),  is equipped
  with two Intel Corporation I210 Gigabit Network Connection (rev 03)
  nics. The correct network driver is loaded, but the link to the
  network switch is not always  (most of the times) established.
  Randomly one, two, all or none of the nics will have a network link
  established (means lights on the nic are dark). This happens with cold
  or soft boots.

  Attached you will find an apport-report from our system.

  We have compiled the latest intel igb-driver downloaded from the intel website (igb-5.2.9.4) and installed it manually in the system.
  # cp igb.ko /lib/modules/3.13.0-35-generic/kernel/drivers/net/ethernet/intel/igb/igb.ko
  # update-initramfs -c -k all

  !! Using the latest intel driver the problem seems to be solved !!

  
  If I can supply any further information, please let me know

  Thanks in advance
  --- 
  ApportVersion: 2.14.1-0ubuntu3.4
  Architecture: amd64
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  CRDA: Error: [Errno 2] No such file or directory
  DistroRelease: Ubuntu 14.04
  IwConfig:
   eth0      no wireless extensions.
   
   eth1      no wireless extensions.
   
   lo        no wireless extensions.
  MachineType: FUJITSU PRIMERGY TX2540 M1
  Package: linux (not installed)
  ProcEnviron:
   LANGUAGE=de_AT:de
   TERM=xterm
   PATH=(custom, no user)
   LANG=de_AT.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 VESA VGA
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-35-generic root=UUID=0e2cf726-90e1-4868-8cc3-ae28d4d512d0 ro nomdmonddf nomdmonisw
  ProcVersionSignature: Ubuntu 3.13.0-35.62-generic 3.13.11.6
  PulseList:
   Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not accessible: Permission denied
   No PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-35-generic N/A
   linux-backports-modules-3.13.0-35-generic  N/A
   linux-firmware                             1.127.5
  RfKill: Error: [Errno 2] No such file or directory
  Tags:  trusty trusty trusty
  Uname: Linux 3.13.0-35-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:
   
  _MarkForUpload: True
  dmi.bios.date: 07/15/2014
  dmi.bios.vendor: FUJITSU // American Megatrends Inc.
  dmi.bios.version: V4.6.5.4 R1.12.0 for D3099-B1x
  dmi.board.name: D3099-B1
  dmi.board.vendor: FUJITSU
  dmi.board.version: S26361-D3099-B12 WGS03 GS01
  dmi.chassis.asset.tag: cpsvs3
  dmi.chassis.type: 17
  dmi.chassis.vendor: FUJITSU
  dmi.chassis.version: TX2540M1F5
  dmi.modalias: dmi:bvnFUJITSU//AmericanMegatrendsInc.:bvrV4.6.5.4R1.12.0forD3099-B1x:bd07/15/2014:svnFUJITSU:pnPRIMERGYTX2540M1:pvrGS01:rvnFUJITSU:rnD3099-B1:rvrS26361-D3099-B12WGS03GS01:cvnFUJITSU:ct17:cvrTX2540M1F5:
  dmi.product.name: PRIMERGY TX2540 M1
  dmi.product.version: GS01
  dmi.sys.vendor: FUJITSU

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