A new location layer for the TCP/IP protocol stack

  • Authors:
  • André Zúquete;Carlos Frade

  • Affiliations:
  • University of Aveiro, Aveiro, Portugal;IT, Aveiro, Portugal

  • Venue:
  • ACM SIGCOMM Computer Communication Review
  • Year:
  • 2012

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Abstract

The IPv4 address space is quickly getting exhausted, putting a tremendous pressure on the adoption of even more NAT levels or IPv6. On the other hand, many authors propose the adoption of new Internet addressing capabilities, namely content-based addressing, to complement the existing IP host-based addressing. In this paper we propose the introduction of a location layer, between transport and network layers, to address both problems. We keep the existing IPv4 (or IPv6) host-based core routing functionalities, while we enable hosts to become routers between separate address spaces by exploring the new location header. For a proof of concept, we modified the TCP/IP stack of a Linux host to handle our new protocol layer and we designed and conceived a novel NAT box to enable current hosts to interact with the modified stack.