Abstract In order to solve the scaling and address depletion problems of IP, the next generation IP protocol will have a larger address. Along with this increase in size is an increase in the number of hierarchy levels in the next generation internet address. This raises the issue of how to assign the new hierarchy levels. This paper discusses the pros and cons of two hierarchical address types-geographic and provider-rooted. It shows that the two address types have different advantages and disadvantages, and that one is not inherently superior to the other. It concludes, however, that because of the unregulated nature of the current Internet, provider-rooted addresses are for now the only workable option.
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