Fix to the “Island” Problem
Earlier versions of the Microsoft DNS had a well-documented issue that was known as the “island” problem, which was manifested by a DNS server that pointed to itself as a DNS server. If the IP address of that server changed, the DNS server updated its own entry in DNS, but then other DNS servers within the domain were unable to successfully retrieve updates from the original server because they were requesting from the old IP address. This effectively left the original DNS server in an island by itself, hence the term.
Microsoft DNS fixed this problem in Windows Server 2003 and above. Windows Server 2012 DNS first changes its host records on a sufficient number of other authoritative servers within DNS so that the ...
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