67: Outmoded Oddities

Working on updating Networking for Systems Administrators. The gentle “yes you need IPv6” paragraph in the first edition is getting an update to something a little more… ranty.

Commercial operating systems now default to IPv6, falling back to IPv4 only if IPv6 is unavailable. New networks, especially phone networks, are often IPv6-only. Much of the southern hemisphere, much of Asia, and much of the human race? IPv6-only. Their IPv4 connectivity is a kludge of proxies, carrier-grade NAT, 464xlat,...