This adds a description about the 'direct' type of interface recently added for macvtap device type support on the host.

Index: libvirt-macvtap/docs/formatdomain.html.in =================================================================== --- libvirt-macvtap.orig/docs/formatdomain.html.in +++ libvirt-macvtap/docs/formatdomain.html.in @@ -674,6 +674,28 @@ ...</pre> + <h5><a name="elementsNICSDirect">Direct attachment to physical interface</a></h5> + + <p> + Provides direct attachment of the virtual machine's NIC to the given + physial interface of the host. This setup requires the Linux macvtap + driver to be available. One of the modes 'vepa', 'bridge' or 'private' + can be chosen for the operation mode of the macvtap device, 'vepa' + being the default mode. + </p> + +<pre> + ... + &lt;devices&gt; + &lt;interface type='direct'/&gt; + ... + &lt;interface type='direct'&gt; + &lt;source dev='eth0' mode='vepa'/&gt; + &lt;/interface&gt; + &lt;/devices&gt; + ...</pre> + + <h5><a name="elementsNICSEthernet">Generic ethernet connection</a></h5> <p>