"By building IPv6 into Cisco IOS software, we are enabling continued growth of the Internet and its expansion into new applications and capabilities in a way that maintains compatibility with existing Internet services." -- Stephen Deering, Cisco Fellow and lead designer of the protocol

Internetworking Protocol (IP) addresses are the unique numeric identifiers required of every device connected to the Internet. Two years ago, in response to the exponential increase in demand for new IP addresses, the Internet Engineering Task Force finalized its revision on IP addressing,...