Ubuntu 12.04 LTS Server losing network connectivity after some time

Hello Experts,
I have a new Ubuntu 12.04 esxi virtual machine (console only) with Vmware tools installed and seem to be having a strange issue where if I don't use the vm for a few hours it will eventually lose network connectivity. (can't ping from within the vm outside, can't ssh into the vm). In order to bring it back online I have to run the ifup eth0 command.

The VM is set to a static ip address..


root@linux:/etc/network# cat interfaces
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto eth0
iface eth0 inet static
      address 192.168.107.50
      netmask 255.255.255.0
      broadcast 192.168.107.255
      gateway 192.168.107.254
      dns-nameservers 192.168.107.254


Here's the /var/log/kern.log entries that have to do with the network card:

May 30 13:54:31 linux kernel: [    0.872393] Freeing unused kernel memory: 1200k freed
May 30 13:54:31 linux kernel: [    0.899146] VMware vmxnet3 virtual NIC driver - version 1.1.29.0-k-NAPI
May 30 13:54:31 linux kernel: [    0.904810] VMware PVSCSI driver - version 1.0.1.0-k
May 30 13:54:31 linux kernel: [    0.948398] e1000: Intel(R) PRO/1000 Network Driver - version 7.3.21-k8-NAPI
May 30 13:54:31 linux kernel: [    0.948400] e1000: Copyright (c) 1999-2006 Intel Corporation.
May 30 13:54:31 linux kernel: [    0.948454] e1000 0000:02:00.0: PCI INT A -> GSI 18 (level, low) -> IRQ 18
May 30 13:54:31 linux kernel: [    0.948543] e1000 0000:02:00.0: setting latency timer to 64
May 30 13:54:31 linux kernel: [    0.956965] Floppy drive(s): fd0 is 1.44M
May 30 13:54:31 linux kernel: [    0.972936] FDC 0 is a post-1991 82077
May 30 13:54:31 linux kernel: [    1.296729] e1000 0000:02:00.0: eth0: (PCI:66MHz:32-bit) 00:50:56:91:5e:d4
May 30 13:54:31 linux kernel: [    1.296733] e1000 0000:02:00.0: eth0: Intel(R) PRO/1000 Network Connection
May 30 13:54:31 linux kernel: [    1.728012] EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: (null)
May 30 13:54:31 linux kernel: [    9.780087] ADDRCONF(NETDEV_UP): eth0: link is not ready
May 30 13:54:31 linux kernel: [    9.791244] EXT4-fs (sda1): warning: checktime reached, running e2fsck is recommended
May 30 13:54:31 linux kernel: [    9.877712] EXT4-fs (sda1): re-mounted. Opts: (null)
May 30 13:54:31 linux kernel: [   10.002221] Adding 999420k swap on /dev/sda2.  Priority:-1 extents:1 across:999420k
May 30 13:54:31 linux kernel: [   10.111357] e1000: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: None
May 30 13:54:31 linux kernel: [   10.116262] ADDRCONF(NETDEV_UP): eth0: link is not ready
May 30 13:54:31 linux kernel: [   10.116311] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready



Not really sure where to begin with this one, any help would be greatly appreciated.


Thanks,
ntmyfltAsked:
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ntmyfltAuthor Commented:
I called vmware support and they couldn't find anything wrong with the vm.

I proceeded to uninstall and re-install vmware tools though and that seems to have done the trick, the vm has been online for almost 24 hours without a hiccup.

Thanks for your replies.
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ThomasMcA2Commented:
That is an odd one. What is the OS of the VMware host?
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ntmyfltAuthor Commented:
Hi, ESXi 5.1

I'm running the e1000 adaptor, just wondering if that would be the issue?


root@linux:/etc/network# lspci
00:00.0 Host bridge: Intel Corporation 440BX/ZX/DX - 82443BX/ZX/DX Host bridge (rev 01)
00:01.0 PCI bridge: Intel Corporation 440BX/ZX/DX - 82443BX/ZX/DX AGP bridge (rev 01)
00:07.0 ISA bridge: Intel Corporation 82371AB/EB/MB PIIX4 ISA (rev 08)
00:07.1 IDE interface: Intel Corporation 82371AB/EB/MB PIIX4 IDE (rev 01)
00:07.3 Bridge: Intel Corporation 82371AB/EB/MB PIIX4 ACPI (rev 08)
00:07.7 System peripheral: VMware Virtual Machine Communication Interface (rev 10)
00:0f.0 VGA compatible controller: VMware SVGA II Adapter
00:11.0 PCI bridge: VMware PCI bridge (rev 02)
00:15.0 PCI bridge: VMware PCI Express Root Port (rev 01)
00:15.1 PCI bridge: VMware PCI Express Root Port (rev 01)
00:15.2 PCI bridge: VMware PCI Express Root Port (rev 01)
00:15.3 PCI bridge: VMware PCI Express Root Port (rev 01)
00:15.4 PCI bridge: VMware PCI Express Root Port (rev 01)
00:15.5 PCI bridge: VMware PCI Express Root Port (rev 01)
00:15.6 PCI bridge: VMware PCI Express Root Port (rev 01)
00:15.7 PCI bridge: VMware PCI Express Root Port (rev 01)
00:16.0 PCI bridge: VMware PCI Express Root Port (rev 01)
00:16.1 PCI bridge: VMware PCI Express Root Port (rev 01)
00:16.2 PCI bridge: VMware PCI Express Root Port (rev 01)
00:16.3 PCI bridge: VMware PCI Express Root Port (rev 01)
00:16.4 PCI bridge: VMware PCI Express Root Port (rev 01)
00:16.5 PCI bridge: VMware PCI Express Root Port (rev 01)
00:16.6 PCI bridge: VMware PCI Express Root Port (rev 01)
00:16.7 PCI bridge: VMware PCI Express Root Port (rev 01)
00:17.0 PCI bridge: VMware PCI Express Root Port (rev 01)
00:17.1 PCI bridge: VMware PCI Express Root Port (rev 01)
00:17.2 PCI bridge: VMware PCI Express Root Port (rev 01)
00:17.3 PCI bridge: VMware PCI Express Root Port (rev 01)
00:17.4 PCI bridge: VMware PCI Express Root Port (rev 01)
00:17.5 PCI bridge: VMware PCI Express Root Port (rev 01)
00:17.6 PCI bridge: VMware PCI Express Root Port (rev 01)
00:17.7 PCI bridge: VMware PCI Express Root Port (rev 01)
00:18.0 PCI bridge: VMware PCI Express Root Port (rev 01)
00:18.1 PCI bridge: VMware PCI Express Root Port (rev 01)
00:18.2 PCI bridge: VMware PCI Express Root Port (rev 01)
00:18.3 PCI bridge: VMware PCI Express Root Port (rev 01)
00:18.4 PCI bridge: VMware PCI Express Root Port (rev 01)
00:18.5 PCI bridge: VMware PCI Express Root Port (rev 01)
00:18.6 PCI bridge: VMware PCI Express Root Port (rev 01)
00:18.7 PCI bridge: VMware PCI Express Root Port (rev 01)
02:00.0 Ethernet controller: Intel Corporation 82545EM Gigabit Ethernet Controller (Copper) (rev 01)
root@linux:/etc/network# ls
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ntmyfltAuthor Commented:
looks like it's down again.. any commands that maybe I can run to gather some data as to why this is happening?
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ntmyfltAuthor Commented:
A little more insight into this virtual machine issue. This vm was downloaded from bitnami who provide pre-configured vms ready to go. It was for joomla. When downloaded the ovf file I vmware converted it into our esxi environment, all went well with no issues.
 what I did a bit ago was uninstall vmware tools and it seemed the network came back up but now 45 minutes later it's no longer accessible again
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ThomasMcA2Commented:
The VMware log for that VM might have some helpful error messages. Also, you could add another virtual NIC that uses a different adapter (and disable the broken NIC.)

If those ideas don't help, you may need to post your problem on a VMware forum. Does bitnami have a support forum?
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ntmyfltAuthor Commented:
Since I state the actual solution to the issue i had and nobody else seems to.
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