Abstract
This paper introduces a new protocol called D6across4, which stands for Deploying IPv6 Service across local IPv4 access networks. The protocol aims to encourage Internet Service Providers (ISPs) to start deploying IPv6 service to their customers (end-users). It utilizes the automatic IPv6-in-IPv4 tunnels to transport IPv6 traffic (data and control information) over local IPv4 access networks. The key aspects of this protocol include: providing IPv6 service to end-users equivalent to native one, stateful operation, and requiring simple configurations on both end-user's host and ISP sides at the time of setup. D6across4 connected hosts can communicate with other IPv6 hosts outside their local IPv4 access network. The simulation results showed that D6across4 performance parameters (e.g. latency and throughput) are acceptable in comparison to both IPv4 and IPv6 performance parameters.