Earlier today the Greek IPv6 Task Force held a meeting. Among other things discussed, there was the perception that there has not yet appeared the “killer application” that will make us abandon IPv4 and switch to IPv6. I have been messing with IPv6 on and off for the last 10+ years and I keep hearing this, when it is evident that the killer application already exists:
IPv4 address space shortage!
This is the killer application and this need will drive the change. IPv6 brings along a ton of nice things, but none of them can make us switch. For if it did, we would already have switched.