Analysis of NAT64 Port Allocation Methods for Shared IPv4 Addresses

Document Type Expired Internet-Draft (sunset4 WG)
Authors Gang Chen  , Weibo Li  , Tina Tsou  , Jing Huang  , Tom Taylor  , Tremblay Jf 
Last updated 2016-07-21 (latest revision 2016-01-18)
Replaces draft-gang-sunset4-nat64-port-allocation, draft-chen-sunset4-nat64-port-allocation
Stream Internet Engineering Task Force (IETF)
Intended RFC status (None)
Expired & archived
pdf htmlized bibtex
Stream WG state WG Document
Document shepherd No shepherd assigned
IESG IESG state Expired
Consensus Boilerplate Unknown
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document enumerates methods of port assignment in Carrier Grade NATs (CGNs), focused particularly on NAT64 environments. Different NAT port allocation methods have been categorized and described. A series of port allocation design principle has been proposed to facilitate the implementations and deployment.


Gang Chen (
Weibo Li (
Tina Tsou (
Jing Huang (
Tom Taylor (
Tremblay Jf (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)