ansible: tweak network facts error handling

ansible_facts.d/network.fact

@@ -22,11 +22,10 @@ def has_valid_ipv6():
         for line in lines:
             line = line.strip()
             if line.startswith("inet6") and not line.startswith("inet6 fe80"):
-                return True
-        return False
+                return True, None  # Valid IPv6 found, no error
+        return False, None  # No valid IPv6 found, no error
     except Exception as e:
-        print(f"Error checking for IPv6 addresses: {e}")
-        return False
+        return False, f"Error checking for IPv6 addresses: {e}"  # Error occurred
 
 def validate_ip(ip, version):
     try:
@@ -67,22 +66,25 @@ data = {
         "error_ipv4": None,
         "error_ipv6": None,
         "failed_ipv4": False,
-        "failed_ipv6": False
+        "failed_ipv6": False,
+        "ipv6_check_error": None  # Add field for IPv6 check error
     }
 }
 
 public_ip, error_v4, failed_v4 = get_ip(urls["ipv4_primary"], "ipv4")
 if not public_ip:
     public_ip, error_v4, failed_v4 = get_ip(urls["ipv4_fallback"], "ipv4")
 
-# Only fetch IPv6 data if a valid IPv6 address is present on the system
-if has_valid_ipv6():
+ipv6_present, ipv6_error = has_valid_ipv6()
+if ipv6_present:
     public_ipv6, error_v6, failed_v6 = get_ip(urls["ipv6_primary"], "ipv6")
     if not public_ipv6:
         public_ipv6, error_v6, failed_v6 = get_ip(urls["ipv6_fallback"], "ipv6")
     data["ip"]["public_ipv6"] = public_ipv6 or ""
     data["ip"]["error_ipv6"] = error_v6
     data["ip"]["failed_ipv6"] = failed_v6
+else:
+    data["ip"]["ipv6_check_error"] = ipv6_error  # Store the IPv6 check error
 
 data["ip"]["public_ip"] = public_ip or ""
 data["ip"]["error_ipv4"] = error_v4