Is there anything special I need to do to get this working?
I’ve had my hosting company transfer IPv6 rDNS to my registered DNS domain (which points back to my InterWorx server).
I set a PTR record up for the domain and when doing a query on the IPv6 address, even from SSH on the server itself, it times out.
The only thing that is a bit different is the forward lookup DNS is hosted with a third party (through my registrar), but I’ve been told that this shouldn’t matter by my hosting company as it’s two different types of lookups.
Yes, they own the IPs for both IPv4 and IPv6. The IPv4 they control the rDNS because I don’t have a big enough block of them for them to delegate control to me. For IPv6 the way they assign them is in huge blocks, so they were able to point the rDNS for that to my server.
What’s weird is doing a local lookup against my InterWorx DNS from on the server, it will return a rDNS PTR record for IPv4 on the domain, but not for the IPv6. I’d starting to think either this DNS can’t do rDNS for IPv6 or there is just a bug / misconfig on my system and I’ll need to open a support ticket.