Comment Half-right (still need to look at public web svrs) (Score 1) 425
However, the public Internet is going to IPv6; the principle reason it hasn't happened (despite IPv6 being standard and available since 1999) is that the problem solved by IPv6 is running out of globally unique IPv4 addresses, and that's only happening next year. Look at the work being done by Global Crossing, NTT, Verizon, Google, Comcast, Facebook and others and you'll see that this is not a fad, it's a significant change that's going to happen slowly over the next few years.
For this reason, the typical network manager does need to look at the external servers (those outside the wonderful NAT) and decide when they'll add IPv6 addresses to those servers that are IPv4-only today. Why bother adding IPv6? It's simple: new broadband customers globally are going to start being connected via IPv6 (out of necessity) and if you want the same end-to-end connectivity you enjoy today, adding IPv6 to your public servers is the quickest route. The alternative is accessing via central carrier-sized NAT devices, which really have unknown performance at scale. This has audio/video streaming, games, geolocation and other implications.