diff --git a/net_util.c b/net_util.c
index 02869c1..9fd08f7 100644
--- a/net_util.c
+++ b/net_util.c
@@ -30,7 +30,9 @@ static char *dns_resolve_filter(const char *host, int32_t family, uint8_t max_ad
     // If no host supplied, then use local machine name
     if (!host) {
         err = gethostname(name, sizeof(name));
-        if (err != 0)
+        if (err != 0) {
+            printf("gethostname fail \n");
+        }
             goto dns_resolve_error;
         printf("gethostname: %s\n", name);
     } else {
@@ -39,8 +41,10 @@ static char *dns_resolve_filter(const char *host, int32_t family, uint8_t max_ad
     }
 
     err = getaddrinfo(name, NULL, NULL, &address_info);
-    if (err != 0)
+    if (err != 0) {
+        printf("getaddr fail\n");
         goto dns_resolve_error;
+    }
 
     // Calculate the length of the return string
     size_t max_ai_string = 1;