For example, the IP Security protocol, which doesn't work well through NAT devices, will work fine with 6to4, proponents say.

CNN: New protocol sneaks IPv6 traffic over the 'Net

He went through changes that ranged from imitating Nat Cole and Charles Brown to finding his own voice in jazz, gospel, rhythm and blues, rock 'n' roll, country, pop and soul.

WSJ: A Performance With Soul

However, ISPs have so widely deployed network address translation (NAT) devices, which coordinate multiple intranet addresses through a single Internet address, that they're in no hurry to move to IPv6.

CNN: New protocol sneaks IPv6 traffic over the 'Net