Richard L. Barnes wrote: >> As you are assuming physical identity of DHCP clients are known >> reliably (I don't know how it can be done), it is a lot easier >> for DHCP servers to assign static IP addresses to the clients >> based on the physical identity information than assigning random >> addresses and map them later through complicated database look up. > > As an example, consider a system we built for the IETF meeting > network a few years ago. The server queried a series of > tables inside of NetDisco to map an IP address to the WiFi AP > that it was connected to: > IP address --> MAC address --> Connected AP As the MAC addresses are NOT reliable, it is a lot more straight forward to directly map between IP addresses and APs. > Since the locations of the APs are known, this gives you the > location of the endpoint to within a few tens of meters > (empirically, within the IETF network). Directional antenna makes it imprecise. >> Is it a use case in the real world? > > The US FCC thinks so: > <http://edocket.access.gpo.gov/2011/pdf/2011-565.pdf> Could you quote the relevant part of the lengthy document? Masataka Ohta _______________________________________________ Ietf mailing list Ietf@xxxxxxxx https://www.ietf.org/mailman/listinfo/ietf