RFC 6333: Dual-Stack Lite Broadband Deployments Following IPv4 Exhaustion, A. Durand, R. Droms, J. Woodyatt, Y. Lee

This document revisits the dual-stack model and introduces the Dual- Stack Lite technology aimed at better aligning the costs and benefits of deploying IPv6 in service provider networks. Dual-Stack Lite enables a broadband service provider to share IPv4 addresses among customers by combining two well-known technologies: IP in IP (IPv4- in-IPv6) and Network Address Translation (NAT). [STANDARDS-TRACK]

Source: http://www.rfc-editor.org/rfc/rfc6333.txt

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