if ! [[ "$Q_ML2_PLUGIN_MECHANISM_DRIVERS" =~ "arista" ]]; then
    Q_ML2_PLUGIN_MECHANISM_DRIVERS="$Q_ML2_PLUGIN_MECHANISM_DRIVERS,arista"
fi

ARISTA_DIR=${ARISTA_DIR:-$DEST/networking-arista}

ARISTA_ML2_CONF_SAMPLE=$ARISTA_DIR/etc/ml2_conf_arista.ini
ARISTA_ML2_CONF_FILE=${ARISTA_ML2_CONF_FILE:-"$NEUTRON_CONF_DIR/ml2_conf_arista.ini"}
ARISTA_REGION_NAME=${ARISTA_REGION_NAME:-"$REGION_NAME"}
