diff --git a/app/modules/net.c b/app/modules/net.c
index bb36d45b..bbb9f6f0 100644
--- a/app/modules/net.c
+++ b/app/modules/net.c
@@ -224,7 +224,9 @@ static void net_dns_found(const char *name, ip_addr_t *ipaddr, void *arg)
 */
 
   // "enhanced"
+
   lua_rawgeti(gL, LUA_REGISTRYINDEX, nud->cb_dns_found_ref);    // the callback function
+  lua_rawgeti(gL, LUA_REGISTRYINDEX, nud->self_ref);  // pass the userdata(conn) to callback func in lua
 
   if(ipaddr == NULL)
   {
@@ -242,7 +244,7 @@ static void net_dns_found(const char *name, ip_addr_t *ipaddr, void *arg)
   }
   // "enhanced" end
 
-  lua_call(gL, 1, 0);
+  lua_call(gL, 2, 0);
 
 end:
   if((pesp_conn->type == ESPCONN_TCP && pesp_conn->proto.tcp->remote_port == 0)