We are using Active Directory DNS and have a few unused IP addresses showing up under Forward Lookup Zones > internal domain name > Properties > Name Servers tab of the PDC. If these entries are removed from the PDC and other AD boxes w/ DNS the usused IPs will readd themselves to the Name Servers tab as well as the (same as parent folder) in the listing. I have also attempted stopping DNS service on the other AD boxes while removing these entries on the PDC. I must be missing a step here... any help would be appreciated.
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