The sorry state of IPv6 reverse DNS

cmeerw

Just noticed that reverse DNS for IPv6 addresses doesn't work over IPv6-only for any of my VPSes.

For alphaVPS and KTS24 the DNS servers responsible for the reverse zone don't have any IPv6 address and for InceptionHosting the DNS server do have IPv6 addresses, but are not reachable via IPv6.

Are others any better?

gbshouse

Yeah, just in case we are fully dual-stack, with /64 or higher you should be able to delegate it to us, just ask your provider is it possible

cmeerw

@gbshouse said: with /64 or higher you should be able to delegate it to us, just ask your provider is it possible

Well... not sure that would actually help. Presumably, the delegation would then be done on that name server that isn't reachable via IPv6, so you still have an IPv4-only part in the whole chain.

carlin0

I have a VPS KTS24 and reverse DNS for IPV6 work fine

Mumbly

I have InceptionHosting in .DE and .NL
Just tested .NL and reverse DNS for IPV6 work fine.

edit.
Checked also for .DE location and there also work fine.

cmeerw

@carlin0 said: I have a VPS KTS24 and reverse DNS for IPV6 work fine
@Mumbly said: Just tested .NL and reverse DNS for IPV6 work fine.

Just to be extra clear - it works fine over IPv4, but not for IPv6-only hosts (and not using any dual-stack resolver)

Mumbly

Aaaah... thanks for pointing out (again). My bad. I don't have IPv6-only setup.

gshapiro

Not exhaustive but of the 15ish providers I've used, here are the ones that allow IPv6 rDNS:

AWS (hit or miss approval)
GCP
RamNode
Ethernet Servers
xTOM v.ps
Scaleway (Dedi)

Mumbly

@gshapiro

@cmeerw said: Just to be extra clear - it works fine over IPv4, but not for IPv6-only hosts (and not using any dual-stack resolver)

gshapiro

Ah, understood. That is not something I have tested.

jarland

That’s because no one but IPv6 hobbyists lack IPv4 connectivity. It’s an entertaining exercise to go v6 only but that’s really all it is.

Neoon

@jarland said:
That’s because no one but IPv6 hobbyists lack IPv4 connectivity. It’s an entertaining exercise to go v6 only but that’s really all it is.

Funny you say that, some ISP are selling IPv6 only Internet access.
IPv4 NAT is optional and overloaded.

Despite that shit, they charge the same price.

Razza

Why not just use a DNS resolver that is also IPv4 capable, the way I see it if you decide to use a IPv6 only capable resolver then you run into there kind of issues, from the top of my mind I know a few major websites that got IPv6 but there nameservers are IPv4 only.

cmeerw

@Razza said: Why not just use a DNS resolver that is also IPv4 capable, the way I see it if you decide to use a IPv6 only capable resolver then you run into there kind of issues

But the point is that these issues need to be resolved, otherwise, why bother with IPv6 at all?

chris

It's because ipv6 smells. If anyone needs me, I'll be hiding from @yoursunny 😁

mfvps

have you resolved it?

Jab

@mfvps said:
have you resolved it?

Stop spamming useless posts if you don't understand topic.
It will not help you getting that NanoKVM