[Bloat] ipv6 with telephone number mapping

[Kenneth Porter]

On 11/25/2021 9:26 AM, Dave Taht wrote:
> What's the real barrier to doing this nowadays? We use signal in this
> way, sort of:
>
> https://twitter.com/ID_AA_Carmack/status/1463740452260171776
>
> "There should be an automatic mapping from cellular numbers to IPV6
> addresses so you can run a directly accessible server on any cell
> phone."

Without root, phones make really frustrating servers.

Do/can phones have provider-independent addresses? Do we need root to 
assign one?