I have a few name servers for my dns system. Let's say they are ns1.example.com, ns2.example.com. Previously they all resolved to IPv4 addresses. Now I'm planning to implement IPv6 for my dns system. So should I reuse ns1, ns2 for IPv6 name servers? Or should I change them to something different to avoid conflict? Thanks.
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You might want to read up on a AAAA name record – Nixphoe Oct 08 '15 at 19:24
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I'm totally aware of AAAA records. If I use the same name, I have a problem setting glue records for both IPv4 and IPv6 addresses. Godaddy doesn't allow duplicate hostnames for glue records. – Qian Chen Oct 08 '15 at 19:27
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@ElgsQianChen There's no technical reason why they shouldn't allow you to have `A` and `AAAA` glue records for the same name, that would actually be the normal thing to do. Are you positive that they don't allow this? – Håkan Lindqvist Oct 08 '15 at 19:33
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@HåkanLindqvist, seems Godaddy doesn't allow. Here is a screenshot of their error message: https://dl.dropboxusercontent.com/u/5310382/Screen_Shot_2015-10-08_at_12_36_06_PM.png – Qian Chen Oct 08 '15 at 19:38
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2@ElgsQianChen I'm not familiar with that form but it looks like it might possible to add multiple IP addresses for the same hostname? (The numbered list for IP addresses at the bottom seems to suggest there could be multiple entries?) – Håkan Lindqvist Oct 08 '15 at 19:44
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@HåkanLindqvist they ask for a hostname for each IP addresses, and they don't allow duplicate hostname. Not sure whether the hostname for the glue records have to be the same as the AAAA records. – Qian Chen Oct 08 '15 at 19:48
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@HåkanLindqvist I get it work now. It looks like I cannot edit another glue record to share the same name as an existing one. But I can add new IP addresses for the existing one. Thank you for reminding. – Qian Chen Oct 08 '15 at 19:51
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@ElgsQianChen please post that as an answer so you can accept it in a few days. That way this question won't sit around in the un-answered queue for years. – Mark Henderson Oct 08 '15 at 20:03
1 Answers
2
The A
and AAAA
record types can coexist at the same owner name.
Normally you would just add both types of address records for the same hostname for a dual-stack host, this also applies to nameservers and their glue records.
After some discussion in the comments it appears that the issue at hand was the specific behavior of the Godaddy UI for adding glue records.
Their UI apparently refuses to merge multiple nameserver hostnames but allows adding multiple addresses to the same nameserver hostname.
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Håkan Lindqvist
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