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IPV6 Entries in DNS - Are they needed?

wchull (MIS) (OP)
22 Jan 07 20:02
My department took over responsibility for our external DNS and when we looked at some of the zone entries I can see some Host (A) records and some IPV6 Host (AAAA) records with the same name.  The guy that put the IPV6 records in DNS has left the company and nobody that maintained the system afterwards can tell me why they are there.  I have confirmed that the format of the IPV6 address does correspond to the existing IP address using 4 octets and nothing seems to be out of the ordinary.  It could be that the previous support person was simply experimenting with the system and put several IPv6 entries in DNS but it somewhat bothers me that noboday knows why they are in there and I'm wondering if we shouldn't add additional IPV6 addresses or whether we should remove the IPV6 records so that only regular IP addresses are avilable.  Any rational as to why they are in DNS currently and what we should do with them would be greatly appreciated.
KiscoKid (ISP)
23 Jan 07 5:45
Having DNS servers with both A and AAAA records is a standard IPv6 migration technique where IPv4 and IPv6 hosts co-exist on the same network.

If you are aware of future plans to move to IPv6, I'd probably leave the records there.

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