diff --git a/senseApis/livoxGen1/livoxGen1.cpp b/senseApis/livoxGen1/livoxGen1.cpp
index 47a30da..98eec22 100644
--- a/senseApis/livoxGen1/livoxGen1.cpp
+++ b/senseApis/livoxGen1/livoxGen1.cpp
@@ -228,7 +228,8 @@ extern "C" void livoxGen1_attachDeviceReq(
 				throw std::runtime_error(
 					std::string(__func__) + ": smo-ip parameter is empty");
 			}
-			if (param.second.find('.') == std::string::npos)
+			if (param.second.find('.') == std::string::npos ||
+			    std::count(param.second.begin(), param.second.end(), '.') != 3)
 			{
 				throw std::runtime_error(
 					std::string(__func__) + ": smo-ip parameter is not an "