http://www.rfc-editor.org/rfc/rfc7757.txt
RFC 7757: Explicit Address Mappings for Stateless IP/ICMP Translation, T. Anderson, A. Leiva Popper2016-02-01T23:00:00-00:00This document extends the Stateless IP/ICMP Translation Algorithm (SIIT) with an Explicit Address Mapping (EAM) algorithm and formally updates RFC 6145. The EAM algorithm facilitates stateless IP/ICMP translation between arbitrary (non-IPv4-translatable) IPv6 endpoints and IPv4.