| # Nicira NVP | 
 | # ---------- | 
 |  | 
 | # This third-party addition can be used to configure connectivity between a DevStack instance | 
 | # and an NVP Gateway in dev/test environments. In order to use this correctly, the following | 
 | # env variables need to be set (e.g. in your localrc file): | 
 | # | 
 | # * enable_service nicira            --> to execute this third-party addition | 
 | # * PUBLIC_BRIDGE                    --> bridge used for external connectivity, typically br-ex | 
 | # * NVP_GATEWAY_NETWORK_INTERFACE    --> interface used to communicate with the NVP Gateway | 
 | # * NVP_GATEWAY_NETWORK_CIDR         --> CIDR to configure br-ex, e.g. 172.24.4.211/24 | 
 |  | 
 | # Save trace setting | 
 | MY_XTRACE=$(set +o | grep xtrace) | 
 | set +o xtrace | 
 |  | 
 | # This is the interface that connects the Devstack instance | 
 | # to an network that allows it to talk to the gateway for | 
 | # testing purposes | 
 | NVP_GATEWAY_NETWORK_INTERFACE=${NVP_GATEWAY_NETWORK_INTERFACE:-eth2} | 
 |  | 
 | function configure_nicira() { | 
 |     : | 
 | } | 
 |  | 
 | function init_nicira() { | 
 |     die_if_not_set $LINENO NVP_GATEWAY_NETWORK_CIDR "Please, specify CIDR for the gateway network interface." | 
 |     # Make sure the interface is up, but not configured | 
 |     sudo ifconfig $NVP_GATEWAY_NETWORK_INTERFACE up | 
 |     sudo ip addr flush $NVP_GATEWAY_NETWORK_INTERFACE | 
 |     # Use the PUBLIC Bridge to route traffic to the NVP gateway | 
 |     # NOTE(armando-migliaccio): if running in a nested environment this will work | 
 |     # only with mac learning enabled, portsecurity and security profiles disabled | 
 |     sudo ovs-vsctl -- --may-exist add-port $PUBLIC_BRIDGE $NVP_GATEWAY_NETWORK_INTERFACE | 
 |     nvp_gw_net_if_mac=$(ip link show $NVP_GATEWAY_NETWORK_INTERFACE | awk '/ether/ {print $2}') | 
 |     sudo ifconfig $PUBLIC_BRIDGE $NVP_GATEWAY_NETWORK_CIDR hw ether $nvp_gw_net_if_mac | 
 | } | 
 |  | 
 | function install_nicira() { | 
 |     : | 
 | } | 
 |  | 
 | function start_nicira() { | 
 |     : | 
 | } | 
 |  | 
 | function stop_nicira() { | 
 |     : | 
 | } | 
 |  | 
 | # Restore xtrace | 
 | $MY_XTRACE |