oVirt created bridge interfaces defaults to DHCP instead of manual (None). As "None" is the default setting in oVirt I would assume that this would translate to "manual" in /etc/network/interfaces.
1) Setup a WR oVirt engine. 2) Setup a WR oVirt node and install it using the engine. 3) Create a new "Logical Network" (and attach it to the Cluster). 4) Use "Setup Host Networks" to assign the new Logical network to a physical interface on the node. Press the small "pen" icon to see that Boot Protocol is set to "None" (which is default). Tick in "Save network configuration" and press OK. 5) Wait for the configuration to complete. 6) Check /etc/network/interfaces file on the node and see that the interface is set to DHCP, e.g.: iface basenet inet dhcp
