![]() | example.fr. | |||
![]() | dyndns1.ookoo.org. | 87.98.170.177 | ||
![]() | dyndns2.ookoo.org. | 174.120.185.76 | ||
L'hôte ne répond pas aux requêtes ICMP (présence d'un pare-feu?)
Le serveur n'écoute pas ou ne répond pas en UDP sur le port 53The DNS assumes that messages will be transmitted as datagrams or in a byte stream carried by a virtual circuit. While virtual circuits can be used for any DNS activity, datagrams are preferred for queries due to their lower overhead and better performance.