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36.3. Virtualized Ethernet devices are not found by networking tools

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The networking tools cannot identify the Xen Virtual Ethernet networking card inside the guest operation system. Verify this by executing the following (for Red Hat Enterprise Linux 4 and Red Hat Enterprise Linux 5):
cat /etc/modprobe.conf
Or (for Red Hat Enterprise Linux 3):
cat /etc/modules.conf
The output should contain the line and a similar line for each additional interface.
alias eth0 xen-vnif
To fix this problem you will need to add the aliasing lines (for example, alias eth0 xen-vnif) for every para-virtualized interface for the guest.
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