Issues With Port-Restricted IP Addresses

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Last updated 2010-02-28
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document discusses issues with assigning an IP address to a host interface such that the IP address may only be used with a restricted set of ports. This concept is referred to herein as a port- restricted IP address. A number of issues with this concept are documented, and the issues are contrasted with other approaches to dealing with IPv4 address exhaustion.


Dave Thaler (

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