Dynamic Host Configuration Protocol Options for Coordinate-Based Location Configuration Information

Abstract

This document specifies Dynamic Host Configuration Protocol options (both DHCPv4 and DHCPv6) for the coordinate-based geographic location of the client. The Location Configuration Information (LCI) includes Latitude, Longitude, and Altitude, with resolution or uncertainty indicators for each. Separate parameters indicate the reference datum for each of these values. This document obsoletes RFC 3825.

Privacy Considerations for DHCPv6

“…The GeoLoc options [RFC6225] are used by the DHCPv6 server to provide coordinate-based geographic location information to DHCPv6 clients. They enable a DHCPv6 client to obtain its location.…”

Privacy Considerations for DHCP

“…The GeoConf and GeoLoc options [RFC6225] are used by a DHCP server to provide coordinate-based geographic location information to DHCP clients. They enable a DHCP client to obtain its geographic location.…”

Representation of Uncertainty and Confidence in the Presence Information Data Format Location Object (PIDF-LO)

“…The "resolution" parameters in [RFC6225] provide an indication of how many bits of a number are valid, which could be interpreted as an expression of uncertainty in one dimension.…”