Richard L. Barnes wrote:
However, there are several emerging systems that provide much
more than these generic databases. Typically, these systems
tap into network management infrastructure to map an IP
address to the physical resource to which it is assigned,
using things like RADIUS databases and DHCP lease tables.
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.
This is an important use case, for example, for ECRIT
emergency services [draft-ietf-ecrit-framework]
Is it a use case in the real world?
IP addresses are also used as input to higher-fidelity
geolocation services that resolve an IP address to
a physical location using information from the network
infrastructure.
AFAIK, IP addresses can not be used for high fidelity geo-location,
though some copyright-wraiths are hoping so.
Masataka Ohta
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