VMware Communities: Message List - Eth0 disapears in VMware and Ubuntu Server

Re: Eth0 disapears in VMware and Ubuntu Server

Superkikim — Mon, 10 Nov 2008 22:54:56 GMT

I might be naïve, but from my point of view, if a file exists, it has a good reason to do so... Therefore, I like better to edit the file, and correct the rules rather then to remove it.

Stop networking and udev:

/etc/init.d/udev stop
/etc/init.d/networking stop

Then, edit the persistent-net.rules file:

On Ubuntu: /etc/udev/rules.d/70-persistent-net.rules
On Debian: /etc/udev/rules.d/z25-persistent-net.rules

You will find two instances. The first one is the one from the template virtual machine. The second one is the one attributed when answering "I copied it", on first start:

# PCI device 0x1022:0x2000 (vmxnet)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:0c:29:36:xx:xx", ATTR{type}=="1", NAME="eth0"

# PCI device 0x1022:0x2000 (vmxnet)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:0c:29:75:xx:xx", ATTR{type}=="1", NAME="eth1"

Delete the 1st one, and change eth1 to eth0 at the end on the second one. You will end up with:

# PCI device 0x1022:0x2000 (vmxnet)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:0c:29:75:xx:xx", ATTR{type}=="1", NAME="eth0"

Save the file (obviously), and then restart udev and networking:

/etc/init.d/udev start
/etc/init.d/networking start

And it works. You don't need to reboot your machine or what so ever, and you don't have to delete that rule file.

Re: Eth0 disapears in VMware and Ubuntu Server

bernie888 — Sat, 14 Feb 2009 19:11:40 GMT

thanks guys for posting the answers on this one. It was doing my head in when my vmware servers just lost their networking!! Not sure if the original cause was due to cloning as I did have it working after cloning for a considerable period, but no matter, the fix of removing this persistent net rules file and rebooting worked for me!

Excellent stuff guys.

Re: Eth0 disapears in VMware and Ubuntu Server

GuruLeeNyc — Mon, 26 Jan 2009 23:06:35 GMT

I experienced this problem when converting a ubuntu 8.04appliance to esx 3.5. This fixe d my issue:

sudo rm /etc/udev/rules.d/70-persistent-net.rules
sudo reboot

Re: Eth0 disapears in VMware and Ubuntu Server

Lance Rushing — Wed, 06 Aug 2008 18:55:44 GMT

For Ubuntu Hardy 8.04 I got eth0 work by doing the following:

sudo rm /etc/udev/rules.d/70-persistent-net.rules
sudo reboot

Also I went back and removed the 70-persistent-net.rules from my gold source used for cloning.

Re: Eth0 disapears in VMware and Ubuntu Server

KevinG — Mon, 28 May 2007 04:15:44 GMT

This is not a VMware issue this is a udev issue. Since the VM has a new MAC address from being moved and a new UUID was created, udev believes there is a new network device.

Check /etc/iftab and /etc/network/interfaces file

You can change this behavior with a udev rule.

You may want to look at /etc/udev/rules.d/z25_persistent-net.rules

Eth0 disapears in VMware and Ubuntu Server

tuaris — Mon, 28 May 2007 03:33:56 GMT

I've reproduced this error many times:

1) Download VMWare Server, and Install
2) Download Ubuntu Server 7.04, and install in VMWare
3) Complete the OS installation
4) Networking is functional, eth0 is present
5) Shutdown
6) Copy the virtual machine or rename folder that it's in
7) Launch new copy, VMWare prompts to create a new ID
Networking is no longer functional, eth0 is gone

The problem occurs whether or not you install VMWare tools