@e1415 :
A local DNS server may cache and respond more quickly than querying an outside name server.
When one queries for www.FreeBSD.org, the resolver usually queries the uplink ISP's name server, and retrieves the reply. With a local, caching DNS server, the query only has to be made once to the outside world by the caching DNS server. Additional queries will not have to go outside the local network, since the information is cached locally.
En d'autres termes, l'utilisation d'un serveur DNS local tel que Unbound offre des temps de réponse meilleurs que ceux d'un serveur externe. L'accès aux pages web déjà visitées est donc accéléré.
Olivier
