[originally raised by Thomas Herzog on the mailing list]
The MA-Hold-Time is only signalled in the SCD object which is sent in Query and
Response messages. However, a responder doing delayed state installation has to
configure a new messaging association based only on the information in the
Confirm, and so cannot recall the MA-Hold-Time value.
Proposed solution:
> i think the neatest solution here is to move the MA_HOLD_TIME to
> the NLI as an optional field there. the Q-node NLI is repeated in
> the confirm. i'd rather not repeat the whole stack-config-data,
> and the stack-proposal is for the 'wrong' node anyway. this is
> not quite as logically pure as the current structure, but is
> probably the right compromise between purity and sophistication.
> (the NLI is repeated in the confirm for precisely the reason that
> the R-node will have forgotten the original, so there is a match
> of purpose here). i will add a new issue for this.
Note that this would also need a flag in the header to indicate the presence of
such a field; we can also define a default value to use if it is not signalled
(rather than having an error about it not being present).
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