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Reporter: martin.thomson@andrew.com | Owner:
Type: enhancement | Status: new
Priority: major | Milestone: draft-ietf-geopriv-3825bis
Component: rfc3825bis | Version:
Severity: - | Resolution:
Keywords: |
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Comment(by bernard_aboba@hotmail.com):
Incorporating suggestions from James.
Client Version Support
Clients implementing this specification MUST support receiving responses
of versions 0 and 1. Since this specification utilizes the same DHCP
option code as [RFC3825], the option format does not provide a means for
the client to indicate the highest version that it supports to the server.
Server Version Selection
A DHCP server that provides location information cannot provide options
with both v0 and v1 formats in the same response. This is not useful since
receiving two copies of the same Option (either in the same response or a
separate response) causes a DHCP client to replace the information in the
old Option with the information in the new Option.
A server uses configuration to determine which version to send in a
response. For example, where a mixture of v0 and v1 clients are expected,
the server could be configured to send v0 or v1 depending on configuration
(possibly making the choice based on information such as the client MAC
address). Where few v0 clients are expected, the server could be
configured to send only v1 responses.
Servers that opt to send location in v1 format are likely to cause clients
that support only v0 to reject the Option. This results in a v0-only
client not obtaining location information, with no ability to indicate to
the server that v1 was unsupported. Therefore, in situations where some
clients are known to support only v0, by default the server SHOULD send a
v0 response.
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Ticket URL: <http://trac.tools.ietf.org/wg/geopriv/trac/ticket/10#comment:4>
geopriv <http://tools.ietf.org/geopriv/>
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