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John DarbyFlag for United States of America

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DNS - Forwarders v. Root Hints

Our lead DNS administrator sent out this message and as the Program Manager I am trying to understand the rationale for the the change.

For those of you who host your own internal DNS servers in your lab/dev/test environments:
-If you’re using ‘root hints’ that point to the IP’s listed below, you need to reconfigure them instead as ‘forwarders’ to the same
-Those teams who host their own DNS should understand what this means

Here was the reason and I am looking for some deeper info to understand why...?

Any private DNS servers/domains (non IT supported/managed)) using root hints to caching servers will have the possibility of resolving split brain records to the Internet IP address rather than the Internal IP address
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Chris Dent
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Chris, thank you for the explanation!