...is initially aimed at software developers, not everyday users. Eventually, backers say, v6 will be unavoidable. Steve Deering, one of IPv6's lead designers, said v4 stopgap measures discourage innovation because new applications might not...

...actually add-ons that could be retrofitted to work with the current system as well. That is true, acknowledged Steve Deering, a Cisco Systems researcher who also co-chairs an IPv6 working group. But he said the address expansion available...