Red Hat ENTERPRISE LINUX 5 - VIRTUALIZATION GUIDE Manual page 380

Chapter 34. Troubleshooting
A workaround is to switch to a different type of virtualized NIC. For example, Intel PRO/1000 (e1000)
or virtio (the para-virtualized network driver).
To switch to the e1000 driver:
1. Shutdown the guest operating system.
2. Edit the guest's configuration file with the virsh command (where GUEST is the guest's name):
# virsh edit GUEST
The virsh edit command uses the $EDITOR shell variable to determine which editor to use.
3. Find the network interface section of the configuration. This section resembles the snippet below:
<interface type='network'>
[output truncated]
<model type='rtl8139' -/>
</interface>
4. Change the type attribute of the model element from 'rtl8139' to 'e1000'. This will change
the driver from the rtl8139 driver to the e1000 driver.
<interface type='network'>
[output truncated]
<model type='e1000' -/>
</interface>
5. Save the changes and exit the text editor
6. Restart the guest operating system.
Alternatively, you can install new virtualized guests with a different network driver. This may be
required if you are having difficulty installing guests over a network connection. This method requires
you to have at least one virtual machine already created (possibly installed from CD or DVD) to use as
a template.
1. Create an XML template from an existing virtual machine:
# virsh dumpxml GUEST > -/tmp/guest.xml
2. Copy and edit the XML file and update the unique fields: virtual machine name, UUID, disk image,
MAC address, and any other unique parameters. Note that you can delete the UUID and MAC
address lines and virsh will generate a UUID and MAC address.
# cp -/tmp/guest.xml -/tmp/new-guest.xml
# vi -/tmp/new-guest.xml
Add the model line in the network interface section:
<interface type='network'>
[output truncated]
<model type='e1000' -/>
</interface>
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