Why is IPv6 such a failure? Is it next to impossible to go with IPv6? I tried recently, and half of the stuff doesn't work. Beyond our tech bubble, most people don't care about it. Even many service/API providers avoid it. Is IPv6 hard to understand? Is compatibility the issue because of legacy devices and apps? What is going on?

@nixCraft I can perfectly remember the most important IPv4 addresses around me, but remembering twice as long hexadecimal IPv6 addresses is as hopeless as trying to remember my wife’s phone number. Plus NAT works and offers another layer of privacy: when IPv6 was developed 20 years ago, some people still used telnet! I don’t want every device to have a unique id.