My only point was we are more likely to run into IPv6 today then even a year ago. But I agree that a lot of people will be able to avoid it. But it doesn't hurt to know a little bit about it these days. Though that probably applies more to people doing network and system administrators type work (like I do). It's also easier to brush up on it at least a little bit (assuming you know a thing or two about IPv4). As for Cisco, etc. pushing IPv6, the $$$ sparkling in their sales reps eyes are blindingly bright.