Besides Google, other early adopters of IPv6 include the U.S. and . 

Colitti said Google has accepted that IPv6 is a requirement for any company that wants to see the Internet continue to operate and to support new applications and users.

Colitti said the business case for IPv6 is that new devices such as set-top boxes will increasingly support IPv6. In addition, IPv6 will reduce the infrastructure and support costs associated with the alternative to IPv6, which is multiple layers of network address translators (NATs) being installed on the Internet.

"Unless you have a monopoly, you better not be last to market" with IPv6, Colitti warned. "Even if you believe IPv6 will never take on, you might want to hedge your bets."

Colitti said IPv6 must be rolled out in production mode or it won't be used.