On 2009-10-06 10:20, Richard Shockey wrote: ... > The Utility Industry does not understand the current IPv4 number exhaust > problem and the consequences of that if they want to put a IP address on > every Utility Meter in North America. Ironic, really, since IP addresses for every streetlight was one of the favourite examples in the IPng days. Let me quote from RFC 1673 "Electric Power Research Institute Comments on IPng", authored by Ron Skelton Member of Technical Staff Advanced IT Group Electric Power Research Institute Palo Alto CA 94303 "2. Basic Requirements. - Scaleability The addressing scheme must have essentially an unlimited address space to encompass an arbitrarily large number of information objects. Specifically it must solve the fundamental limitations of 32 bit formats, a format for 20 octets and above is considered suitable." (The document was biased towards OSI addressing.) Brian _______________________________________________ Ietf@xxxxxxxx https://www.ietf.org/mailman/listinfo/ietf