Will Ipv6 addresses displace Ipv4 addresses? This question has long plagued the professional community of brokers, IP owners and users. Both groups are two sets of numbers. These sets intersect only in one place, on the Internet, when we route between network nodes. In contrast Ipv6 is very convenient because it allows each node (device) to be directly connected to the internet and in contrast using ipv4 addresses, requires NAT technologies in order to build networks and connect devices as the network provider saves on space due to limited number of IPv4 addresses allocated to provider by regional registries.
All of this of course suggests that ipv4 will soon be replaced by ipv6 which everyone is talking about for the last 20 years. But there is a nuance! Despite the fact that many ISPs switch to ipv6, and make new connections on the new protocol, demand and consequently the lack of resources ipv4 continues to grow. It seems unbelievable, but it is a fact. That is, there is a growing demand for new ipv4 blocks. The question is why not just ipv6 instead?
But at the same time Amazon, which announced that it would be issuing ipv6 to its users, this summer buys $100 million worth of ipv4. Somehow this doesn’t fit with the logic of abandoning ipv4.
Big hosting providers in general have taken such strategy, they give out ipv6 for new servers for free, and ipv4 offer as an additional address for money. As for example Hetzner does.
Let me give the following opinion. The Internet of the future will use both of these protocols, because in fact we are dealing with two mixed numbers, which are almost impossible to separate. There will always be parts of the network which will be ipv6-only or ipv4-only. So both protocols will coexist for a long time to come.