Provider networks are networks created by the OpenStack administrator that map directly to an existing physical network in the data center. An example of this would be networks behind a set of firewalls or load balancers that are routable within your data center. Useful network types in this category are flat(untagged) and vlan (802.1q tagged). It is possible to allow provider networks to be shared among tenants as part of the network creation process.
ovs-vsctl add-br br-eth0
ovs-vsctl add-port br-eth0 eth0
ifconfig br-eth0 <ip address of eth0> up
ip link set br-eth0 promisc on
route add default gw
ip netns list
lshw -class network
sudo /etc/init.d/networking restart
ip link show dev br-ex
sudo vim /etc/resolvconf/resolv.conf.d/base
nameserver <ip>
sudo resolvconf -u
sudo apt-get instll virt-manager
VLAN Network Manager
the internal network interface in promiscuous mode, because
it must receive packets whose target MAC address is of the guest VM, not
of the host.
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