This paper gives an analytical business model of the Internet IPv4 and
IPv6 protocols ,focussing on the business implications of intrinsic
technical properties of these protocols .The technical properties
modeled in business terms are : address space, payload,
autoconfiguration, IP mobility , security, and flow label. Three
operational cash flow focussed performance indexes are defined for
respectively an Internet operator or ISP, for the address domain
owner, and for the end user. Special considerations are made and
modeling changes for mobile Internet traffic. The effects of
technical innovation in the Internet services and protocols is taken
into account , as are special considerations for N.A.T. and content
owners. A numerical case is provided which mimics the current state of
the Internet network and services ,and around which sensitivity
analysis can be carried out, or such that additional service models
can be added. It establishes in the Case the relative advantages or
disadvantages of IPv4 and IPv6 for each of the three main parties
,i.e. the ISP operator, the address domain owner, and the end use