2 question post: IPv6 and ipv6 forum

[Dieselboy]

My colleague is setting up a RHEL VM in one of the clouds. This cloud has undergone a recent internal migration between hardware (they use VMware as the underlying hypervisor) and it means that the VM no longer has IPv4 connectivity at all. The VM only has a IPv6 address and I think they have some kind of ipv6 -> ipv4 gateway on the network.

I had understood that all systems need to be dual stacked? Whats the consensus these days with this?

Also, has anyone tried to search for their ipv6 forum certification listing lately? I cannot find my name in the list any longer

[wintermute000]

All systems that need inbound, yes.

Outbound only e.g. mobile phones, for example right here... NAT64/DNS64 to infinity. My Telstra mobile is ipv6 only right now.

https://www.computerworld.com/article/3521032/telstra-kicks-off-next-stage-of-ipv6-shift-for-mobile-network.html
Ipv6 only is very much a carrier thing though for mobiles primarily, but if your phone works seamlessly then probably 95% of users could also get away with ipv6 only home connections as long as the DNS64 / NAT64 is solid.

[deanwebb]

In other words, IPv6 is definitely coming at us and we need to get uncomfortable for a while so we can get our arms around those bigger addresses.

[Dieselboy]

Cool thanks!

So how to test this DNS64 and NAT64? I googled this and found a google doc: https://developers.google.com/speed/public-dns/docs/using#testing

From the IPv6 only system:

1. First try and browse to a normal url:  http://www.google.com/
2. Then try and access an ipv4 only url: http://ipv4.google.com/
3. Then try and access the url via IPv4 IP: http://216.218.228.119/

I'll keep this info to hand and use this to test out this "cloud" in my OP Thank you for the guidance.