| 2529 | Transmission of IPv6 over IPv4 Domains without Explicit TunnelsB. Carpenter, C. Jung | Proposed Standard | March 1999 |
| 2663 | IP Network Address Translator (NAT) Terminology and ConsiderationsP. Srisuresh, M. Holdrege | Informational | August 1999 |
| 2784 | Generic Routing Encapsulation (GRE)D. Farinacci, T. Li, S. Hanks, D. Meyer, P. Traina | Proposed Standard | March 2000 |
| 2993 | Architectural Implications of NATT. Hain | Informational | November 2000 |
| 3053 | IPv6 Tunnel BrokerA. Durand, P. Fasano, I. Guardini, D. Lento | Informational | January 2001 |
| 3056 | Connection of IPv6 Domains via IPv4 CloudsB. Carpenter, K. Moore | Proposed Standard | February 2001 |
| 4213 | Basic Transition Mechanisms for IPv6 Hosts and RoutersE. Nordmark, R. Gilligan | Proposed Standard | October 2005 |
| 4798 | Connecting IPv6 Islands over IPv4 MPLS Using IPv6 Provider Edge Routers (6PE)J. De Clercq, D. Ooms, S. Prevost, F. Le Faucheur | Proposed Standard | February 2007 |
| 4864 | Local Network Protection for IPv6G. Van de Velde, T. Hain, R. Droms, B. Carpenter, E. Klein | Informational | May 2007 |
| 4890 | Recommendations for Filtering ICMPv6 Messages in FirewallsE. Davies, J. Mohacsi | Informational | May 2007 |
| 4891 | Using IPsec to Secure IPv6-in-IPv4 TunnelsR. Graveman, M. Parthasarathy, P. Savola, H. Tschofenig | Informational | May 2007 |
| 5214 | Intra-Site Automatic Tunnel Addressing Protocol (ISATAP)F. Templin, T. Gleeson, D. Thaler | Informational | March 2008 |
| 5558 | Virtual Enterprise Traversal (VET)F. Templin, Ed. | Informational | February 2010 |
| 5569 | IPv6 Rapid Deployment on IPv4 Infrastructures (6rd)R. Despres | Informational | January 2010 |
| 5741 | RFC Streams, Headers, and BoilerplatesL. Daigle, Ed., O. Kolkman, Ed., IAB · obsoleted by RFC 7841 | Informational | December 2009 |
| 5969 | IPv6 Rapid Deployment on IPv4 Infrastructures (6rd) -- Protocol SpecificationW. Townsley, O. Troan | Proposed Standard | August 2010 |
| 6052 | IPv6 Addressing of IPv4/IPv6 TranslatorsC. Bao, C. Huitema, M. Bagnulo, M. Boucadair, X. Li | Proposed Standard | October 2010 |
| 6092 | Recommended Simple Security Capabilities in Customer Premises Equipment (CPE) for Providing Residential IPv6 Internet ServiceJ. Woodyatt, Ed. | Informational | January 2011 |
| 6144 | Framework for IPv4/IPv6 TranslationF. Baker, X. Li, C. Bao, K. Yin | Informational | April 2011 |
| 6145 | IP/ICMP Translation AlgorithmX. Li, C. Bao, F. Baker · obsoleted by RFC 7915 | Proposed Standard | April 2011 |
| 6146 | Stateful NAT64: Network Address and Protocol Translation from IPv6 Clients to IPv4 ServersM. Bagnulo, P. Matthews, I. van Beijnum | Proposed Standard | April 2011 |
| 6147 | DNS64: DNS Extensions for Network Address Translation from IPv6 Clients to IPv4 ServersM. Bagnulo, A. Sullivan, P. Matthews, I. van Beijnum | Proposed Standard | April 2011 |
| 6169 | Security Concerns with IP TunnelingS. Krishnan, D. Thaler, J. Hoagland | Informational | April 2011 |
| 6180 | Guidelines for Using IPv6 Transition Mechanisms during IPv6 DeploymentJ. Arkko, F. Baker | Informational | May 2011 |
| 6204 | Basic Requirements for IPv6 Customer Edge RoutersH. Singh, W. Beebee, C. Donley, B. Stark, O. Troan, Ed. · obsoleted by RFC 7084 | Informational | April 2011 |