link-local is mandatory for ipv6 to work. Technically everybody you have ever seen is using it. It is unlikely that you know somebody without a cellphone. And a

link-local is mandatory for ipv6 to work. Technically everybody you have ever seen is using it. It is unlikely that you know somebody without a cellphone. And as far as I know, all cellphone networks are ipv6 first. https://en.wikipedia.org/wiki/Link-local_address#IPv6 https://en.wikipedia.org/wiki/Link-local_address#IPv6