BITAG’s Large Scale NAT Report Published
(Mar. 7, 2012)
The Internet is running out of IPv4 addresses. A successor address format, IPv6, has been developed to support as many devices as can conceivably be connected to the Internet for the foreseeable future but the IPv6 transition will take several years to be completed. IPv4 and IPv6 will thus need to co-exist until the demand for IPv4 services diminishes. Network operators are employing a variety of techniques to extend the life of IPv4 addressing given the specter of a long term IPv6 transition. Large Scale Network Address Translation (also known as “Large Scale NAT” or “LSN”) is one such technique. LSN equipment allows a large number of IPv4-enabled end devices to share a single public IPv4 address. Network Address Translation (“NAT”) functionality has long existed in local/private networks to help network operators manage their network addresses using private address space but network operators now contemplate using it on a widespread basis.
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