Networking issue with 64 bit Ubuntu Virtual Machine

[William Scott Lockwood III]

Hi there!
I'm having a very odd problem with networking in a Ubuntu 64-bit
12.04 host in a VMWare ESX 4.1 environment, and Google hasn't been
much help. The host has the e1000 and vmxnet3 drivers available, and
dmesg shows that the driver loads, and eth0 is created. Once I am able
to log into the system however, there is no eth0, and it cannot be
brought up. The right version of the vmware tools has been installed.
The /etc/network/interfaces entry has been tested on another machine,
and works there. I am baffled by this.

--
Regards,
W. Scott Lockwood III

[Trev Peterson]

I would try to rmmod the module and then insmod it again. Check syslog
and the CLI for any clues on what happens at load time. Hope this
helps,

--
Trev Peterson
Advanced Reality
Email: tr...@advanced-reality.com
Phone: +1 847 406 9018

[Arun Khan]

On Wed, Aug 15, 2012 at 12:20 AM, William Scott Lockwood III
<vladi...@gmail.com> wrote:

> The host has the e1000 and vmxnet3 drivers available, and
> dmesg shows that the driver loads, and eth0 is created.

I am presuming you mean the guest OS.

The word host is somewhat confusing within the context of virtualisation.
I prefer to make the references unambiguous; "host OS" (providing the
virt. platform) and "guest OS" (the VMs running on virt. platform)

> Once I am able
> to log into the system however, there is no eth0, and it cannot be
> brought up.

Dump the output of 'ifconfig -a' and see how many interfaces it reports.

> The right version of the vmware tools has been installed.
> The /etc/network/interfaces entry has been tested on another machine,
> and works there. I am baffled by this.

When you say tested on another machine, does it mean you have
transferred the guest OS image file?

I have no experience with VMWare. However, make sure that your
"host" OS i.e. VMWare is giving the same mac address as in the
machine where you tested it.

In the guest OS, you could also delete all the eth? lines in the file:
/etc/udev/rules.d/70-persistent-net.rules and reboot the system.
Upon reboot do ifconfig -a and see what is reported.

This may sound like stating the obvious but I have been bitten by it a
few times in my Linux KVM setups.

HTH
--
Arun Khan
"As a layman, I would say we have it, but as a scientist I have to
say, 'What do we have?'"
Rolf Heuer, Director General CERN on the announcement of Higgs Boson particle.