luci/applications/luci-app-olsr-services/root/usr/share/rpcd/acl.d/luci-app-olsr-services.json

{
	"unauthenticated": {
		"description": "Grant access to OLSRd config and services file",
		"read": {
			"ubus": {
				"olsr-services": [
					"services4",
					"services6"
				]
			}
		}
	}
}