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Adam Williamson (adamw) has done a fine job at determining how to
get bridged networking working with NetworkManager:<br>
<a class="moz-txt-link-freetext" href="https://www.happyassassin.net/2014/07/23/bridged-networking-for-libvirt-with-networkmanager-2014-fedora-21/">https://www.happyassassin.net/2014/07/23/bridged-networking-for-libvirt-with-networkmanager-2014-fedora-21/</a><br>
<br>
According to Adam, he did the work on Fedora 21 whereas I did it on
Fedora 20. the undesirable features (problems) I found may be
corrected on F21 but I believe that they have not been fixed.<br>
<br>
While Adam's procedure for creating a bridge definition for
NetworkManager using the Gnome or nm-connection-editor are basically
correct. However, The virt-manager & libvirt do not "like" the
default names. [<b>not a show stopper but it should be fixed</b>]
Instead, the the bridge definition, use "br0" for the connection
name and the device name. For the "slave" definition (the real
physical NIC), use the <physical_device_name> such as p33p1 or
p4p1 or em0 or whatever. I then rebooted the host to make sure
everything was clean and the netowrk came up fine on br0.<br>
<br>
Then, using virt-manager, I took an existing VM, deleted the virtual
NIC, added a new virtual NIC using br0. After booting up the VM,
you need to edit its network configuration to delete the existing
definition and add a new one pointing to the new virtual NIC.<br>
<br>
This works!!! And on Fedora 20 ... oops, not quite Fedora 20. This
was done on a Fedora 20 host which as the updates from
fedora-virt-preview applied. I still have a system without the
preview updates so I will go back and see if it works or it needs
the preview updates.<br>
<br>
Gene<br>
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