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During the transition to a new master it is important to make sure that there are no zone-changes, as it is good that all DNS servers knows the same addresses. Also, do not turn off the old masters if thats the only one your clients queries.
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During the transition to a new master it is important to make sure that there are no zone-changes, as it is good that all DNS servers knows the same addresses. Also, do not turn off the old masters if thats the only one your clients queries.