Re: [TLS] Last Call: draft-ietf-tls-rfc4346-bis (The TransportLayer Security (TLS) Protocol Version 1.2) to Proposed Standard

[<Pasi.Eronen at nokia.com>]

Simon,

The relationship between updates/obsoletes/references is not (as far 
as I know) clearly defined anywhere, but in practice, there is rarely 
any confusion.

Suppose that someone is implementing RFC AAAA, an optional extension
to a base protocol specified in RFC BBBB, and finds that the base
protocol specification has been updated after RFC AAAA was published
(i.e., RFC BBBB has been obsoleted by RFC CCCC). The implementor
should know whether his/her implementation implements BBBB or CCCC,
and if it's the latter, usually is able to easily tell whether the
extension works with the new version or not.