As I understand IPv4+ concept in this article, your router gets address 1.2.3.4 then every device behind it gets 1.2.3.4.0.0.0.1, etc. This is the bit that was

As I understand IPv4+ concept in this article, your router gets address 1.2.3.4 then every device behind it gets 1.2.3.4.0.0.0.1, etc. This is the bit that wasn't in djb's original article AFAIR. My take was that 1.2.3.4 and 1.2.3.4.0.0.0.1 would be the same machine -- or at least allocated to the same entity.