ip_info=`ip addr show $external_nic|grep -Eo '[^ ]+ brd [^ ]+ '`
if [ $br_exist -eq 0 ]; then
if [ "$external_nic" != "br-external" ]; then
+ sudo ip link set br-external up
sudo ovs-vsctl --may-exist add-port br-external $external_nic
sudo ip addr flush $external_nic
sudo ip addr add $ip_info dev br-external
fi
else
sudo ovs-vsctl add-br br-external
+ sudo ip link set br-external up
sudo ovs-vsctl add-port br-external $external_nic
sudo ip addr flush $external_nic
sudo ip addr add $ip_info dev br-external