It is widely accepted that the current Internet architecture is insufficient for the future: problems such as address space scarcity, mobility and non-universal connectivity are already with us, and stand to be exacerbated by the explosion of wireless, ad-hoc and sensor networks. Furthermore, it is far from clear that the ubiquitous use of standard transport and name resolution protocols will remain practicable or even desirable. In this paper we propose Plutarch, a new internetworking

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... ure. It subsumes existing architectures such as that defined by the Internet Protocol suite, but makes explicit the heterogeneity that contemporary inter-networking schemes attempt to mask. To handle this heterogeneity, we introduce the notions of context and interstitial function, and describe a supporting architecture. We discuss the benefits, present some potential scenarios, and consider the research challenges posed.