Specifications

use by Red Hat Virtualization. WiFi cards are not the ideal network connection method since

Red Hat Virtualization uses the default network interface.

The idea here is to create a 'dummy' network interface for Red Hat Virtualization to use.

This technique allows you to use a hidden IP address space for your guests and Virtual

Machines. To do this operation successfully, you must use static IP addresses as DHCP does

not listen for IP addresses on the dummy network. You also must configure NAT/IP

masquerading to enable network access for your guests and Virtual Machines. You should

attach a static IP when you create the 'dummy' network interface.

For this example, the interface is called dummy0 and the IP used is 10.1.1.1 The script is called

ifcfg-dummy0 and resides in the /etc/sysconfig/network-scripts/ directory:

DEVICE =dummy0

BOOTPROTO=none

ONBOOT=yes

USERCTL=no

IPV6INIT=no

PEERDNS=yes

TYPE=Ethernet

NETMASK=255.255.255.0

IPADDR=10.1.1.1

ARP=yes

You should bind xenbr0 to dummy0 to allow network connection even when disconnected from

the physical network.

You will need to make additional modifications to the xend-config.sxp file. You must locate

the ( network-script 'network-bridge' bridge=xenbr0 ) section and add include this in

the end of the line:

netdev=dummy0

You must also make some modifications to your guest's domU networking configuration to

enable the default gateway to point to dummy0. You must edit the DomU 'network' file that

resides in the /etc/sysconfig/ directory to reflect the example below:

NETWORKING=yes

HOSTNAME=localhost.localdomain

GATEWAY=10.1.1.1

IPADDR=10.1.1.10

NETMASK=255.255.255.0

Laptop Configurations