https://app.knowbase.one/vault/rfc/docid/7343
RFC6751: Native IPv6 behind IPv4-to-IPv4 NAT Customer Premises Equipment (6a44)
Independent Submission R. Despres, Ed. Request for Comments: 6751 RD-IPtech Category: Experimental B. Carpenter ISSN: 2070-1721 Univ. of Auckland ...