6to4 tunneling framework using OpenSSH

Abstract

6to4 tunneling enables IPv6 hosts and routers to connect with other IPv6 hosts and routers over the existing IPv4Internet. The main purpose of IPv6 tunneling is to maintain compatibility with large existing base of IPv4 hosts and routers. OpenSSH VPN tunneling is said to have limitations with numerous IPv6 clients and therefore it is advisable to use OpenVPN. To the best knowledge of the authors, this is the first reported successful implementation of 6to4 tunneling over OpenSSH with more than one client. This proof-of-concept positions OpenSSH therefore as a potential alternative to conventional VPNs.