* Nick Hilliard > the level of pain > associated with continued deployment of ipv4-only services is still nowhere > near the point that ipv6 can be considered a viable alternative.
This depends on who you're asking; as a blanket statement it's demonstrably false: For the likes of T-Mobile USA¹ and Facebook², or even myself³, IPv6-only isn't just an «alternative». It's «happening». [1] http://www.dslreports.com/shownews/TMobile-Goes-IPv6-Only-on-Android-44-Devices-126506 [2] https://www.dropbox.com/s/doazzo5ygu3idna/WorldIPv6Congress-IPv6_LH%20v2.pdf [3] http://www.ipspace.net/IPv6-Only_Data_Centers Tore