|  | # Neutron VPN plugin | 
|  | # --------------------------- | 
|  |  | 
|  | # Save trace setting | 
|  | MY_XTRACE=$(set +o | grep xtrace) | 
|  | set +o xtrace | 
|  |  | 
|  |  | 
|  | AGENT_VPN_BINARY="$NEUTRON_BIN_DIR/neutron-vpn-agent" | 
|  | VPN_PLUGIN="neutron.services.vpn.plugin.VPNDriverPlugin" | 
|  | IPSEC_PACKAGE=${IPSEC_PACKAGE:-"openswan"} | 
|  |  | 
|  | function neutron_vpn_install_agent_packages() { | 
|  | install_package $IPSEC_PACKAGE | 
|  | } | 
|  |  | 
|  | function neutron_vpn_configure_common() { | 
|  | if [[ $Q_SERVICE_PLUGIN_CLASSES == '' ]]; then | 
|  | Q_SERVICE_PLUGIN_CLASSES=$VPN_PLUGIN | 
|  | else | 
|  | Q_SERVICE_PLUGIN_CLASSES="$Q_SERVICE_PLUGIN_CLASSES,$VPN_PLUGIN" | 
|  | fi | 
|  | } | 
|  |  | 
|  | # Restore xtrace | 
|  | $MY_XTRACE |