Microsoft developers have changed the functionality of many of Windows' components. DNS is one of them. A DNS client component running on a Vista computer behaves differently than it did in previous versions of Windows.
This tip explains the behavior of the DNS client component in Windows Vista for DNS queries and registrations.
Windows Vista will need to perform two types of DNS queries: A and AAAA. The A is for IPV4 and AAAA is for IPV6. It could be that one of the endpoints or IP Addresses the DNS Server supplied is not reachable and the client retries at DNS server. This will put the load on the DNS server when multiple clients send DNS queries.
The following changes have been made to the DNS client component to minimize the impact on the DNS server:If the client computer has only link-local or Teredo IPV6 addresses assigned, then the DNS Client will send only a single query for its A records.
The DNS Client Service in both operating systems uses DNS Dynamic update and registers the following records:
This article was first published on ServerWatch.com.
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