I purchased Clearwire for tazfrog because Speakeasy was being annoying about getting DSL into her place (so annoying that I dropped them myself) and Comcast was totally unpalatable for any number of reasons.
It worked out well. I set up a nice Linux based router for her that would automatically configure a nice 6to4 IPv6 tunnel with the public IP address that Clearwire assigned to it. It would act as a NAT and a firewall for all the machines inside the network.
Well, recently Clearwire 'upgraded' all of their boxes. And now the boxes assign themselves the public IP address and force all of your computers to use NAT. No more IPv6 tunnel. It's very, very irritating, and also just plain wrong. If you get a fake IP address, you aren't really getting Internet service.
They claim that Motorola, the manufacturer of these boxes, just delivered them that way and there is no way to turn the NATting behavior off. The nice support person gave me a way to log into the web UI of the Motorola box and set up port forwards and such (which doesn't really help for what I actually want to do). But poking around the UI makes it seem like Motorola was intending to support more modes of operation and just never got around to finishing them.
I'm kinda peeved. I was considering outright anger as I was suspecting this was a policy decision on Clearwire's part. But it appears to be simply incompetence and not a policy decision. Being evil by accident seems somehow more excusable than being evil on purpose. And I think giving people NATted IP addresses is definitely evil and wrong. It's not real Internet service.
It's like the phone company putting you behind a PBX and not telling you the extension. Sure you can make all the calls you want, but nobody can call you. And, of course, when you complain you're asked "Of course you have phone service! You can call anybody you want to. What? Why would anybody want to call you?! You're just a dumb consumer! Everybody wants to call in to the radio shows and stuff, that's what the phone is for. We can't be bothered to support your little 1% use-case here! Look, if you want people to talk to you, just dial up one of those conference line places like everybody else. They'll hook you up.".