You can do this with IPV6, these days it's called ULAs (unique unicast local addresses)[0]. Previously there was a formal prefix allocation to solve for this (s

You can do this with IPV6, these days it's called ULAs (unique unicast local addresses)[0]. Previously there was a formal prefix allocation to solve for this (site local addresses), however they have been deprecated for a bit now. [0]: https://blog.apnic.net/2020/05/20/getting-ipv6-private-addressing-right/ https://blog.apnic.net/2020/05/20/getting-ipv6-private-addre...