Introduce /etc/network/interfaces.synnefo that will setup bridges
used for VMs' public and private networks.
Instead of using a common bridge use two separate bridges (br0,
prv0). Their default ports are defined in nodes.conf
(vm_public_iface, vm_private_iface) which are by default dummy. In a
single node setup we don't need those interfaces. In case of router
node, br0 will get the gateway IP.
Use ferm for persistent network configuration. Add masq.ferm that
is responsible for masquerading on router node and MAC SNAT on all
nodes (needed in case we have a MAC filtered setup on
Use rc.local to losetup extra disk and ifup bridges.
Signed-off-by: Dimitris Aragiorgis <firstname.lastname@example.org>