As mentioned in the wg yesterday an informational document with current 
behaviors may be helpful?

Jared Mauch

> On Mar 25, 2015, at 9:52 AM, Paul Vixie <p...@redbarn.org> wrote:
> 
> initiators have historically been able to assume that the responder would not 
> close first. that's the operational environment in which RFC 1035 has been 
> interpreted since 1987. if we want the initiator to change its assumptions 
> then we have to say so. the saying of so may or may not constitute a protocol 
> change since we're clarifying the assumptions rather than asking for 
> different behaviour. but since we must also guide the initiator to not leave 
> a tcp session idle, which absolutely is a protocol change, i see no harm is 
> bundling this guidance into a single document which is collectively a 
> revision to the protocol.

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