ISPs warm to IPv6, but old-era Internet plumbing persists

The next-generation Internet technology is catching on among ISPs and their customers, but efforts to squeeze more life out of IPv4 persist, a survey 

http://news.cnet.com/8301-1023_3-57606534-93/isps-warm-to-ipv6-but-old-era-internet-plumbing-persists/