Alain Durand Recently joined Juniper as director of software engineering in the IPG/CTO group. Prior to this Alain was Director of IPv6 architecture and Internet governance in the Comcast Cable Office of the CTO. BEfore Comcast, Alain was the IPv6 architect for Solaris at Sun Microsystems. Alain earned an engineering degree in hydraulics and fluid mechanics in France. Alain has been working on IPv6 since 1993, participated in the INRIA BSD IPv6 implementation in 1995, was a pioneer on the 6bone in 1996. He has authored numerous RFCs and Internet Drafts, and is the inventor of Dual Stack Lite (DS-Lite). Alain co-chaired the IETF NGtrans working group from 1999 to 2002. He now serves as the co-chair of both the IETF Softwires and PCP working groups.