Dynamic Allocation of Shared IPv4 Addresses
RFC 7618, “Dynamic Allocation of Shared IPv4 Addresses”, is a Proposed Standard document published in August 2015 by Y. Cui, Q. Sun, I. Farrer, Y. Lee, Q. Sun, M. Boucadair. The canonical text is published by the RFC Editor.
Abstract
This memo describes the dynamic allocation of shared IPv4 addresses to clients using DHCPv4. Address sharing allows a single IPv4 address to be allocated to multiple active clients simultaneously, with each client being differentiated by a unique set of transport- layer source port numbers. The necessary changes to existing DHCPv4 client and server behavior are described, and a new DHCPv4 option for provisioning clients with shared IPv4 addresses is included.
Due to the nature of IP address sharing, some limitations to its applicability are necessary. This memo describes these limitations and recommends suitable architectures and technologies where address sharing may be utilized.
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
The canonical text of RFC 7618 is hosted at rfc-editor.org. Available in TXT,HTML.
- RFC 7617 The 'Basic' HTTP Authentication Scheme
- RFC 7619 The NULL Authentication Method in the Internet Key Exchange Protocol Version 2
- RFC 7616 HTTP Digest Access Authentication
- RFC 7620 Scenarios with Host Identification Complications
- RFC 7615 HTTP Authentication-Info and Proxy-Authentication-Info Response Header Fields
- RFC 7621 A Clarification on the Use of Globally Routable User Agent URIs in the SIP Event Notification Framework
- RFC 7614 Explicit Subscriptions for the REFER Method
- RFC 7622 Extensible Messaging and Presence Protocol : Address Format