%% You should probably cite rfc7040 instead of this I-D. @techreport{ietf-softwire-public-4over6-01, number = {draft-ietf-softwire-public-4over6-01}, type = {Internet-Draft}, institution = {Internet Engineering Task Force}, publisher = {Internet Engineering Task Force}, note = {Work in Progress}, url = {https://datatracker.ietf.org/doc/draft-ietf-softwire-public-4over6/01/}, author = {Yong Cui and Jianping Wu and Peng Wu and Chris Metz and Olivier Vautrin and Yiu Lee}, title = {{Public IPv4 over IPv6 Access Network}}, pagetotal = 12, year = 2012, month = mar, day = 12, abstract = {When the service provider networks are upgraded to IPv6, IPv4 connectivity will still be demanded by network users, at least in the recent future. This draft proposes a mechanism for end hosts or networks in IPv6 access networks to build bidirectional IPv4 communication with the IPv4 Internet. The mechanism follows the softwire hub and spoke model, and uses IPv4-over-IPv6 tunnel as basic method to traverse IPv6 network. The bi-directionality of end-to-end communication is achieved by allocating public IPv4 addresses to end hosts/networks. This mechanism is an IPv4 access method for network users in IPv6.}, }