the reason for slow IP adoption is that they decided to break all backwards compatibility. You need new protocol, sure. But do you _have_ to switch from "1 alm

the reason for slow IP adoption is that they decided to break all backwards compatibility. You need new protocol, sure. But do you _have_ to switch from "1 almost fixed address per interface" to "tons of addresses per interface and dynamically changing"? Did you have to present it as a separate protocol to apps? Did you have to use : in representation, breaking most ad-hoc text processing code? etc.. if they goal was "herr is a new verion of IPv4 with same semantics" then we'd just need to wait for new kernels and libraries to come out, and it would be all done years ago.