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> 
> > Is that right, and any reason why the default for
> > vif_plugging_is_fatal shouldn't be False insated of True to make this
> > sequence less dependent on matching config changes ?
> 
> Yes, because the right approach to a new deployment is to have this
> enabled. If it was disabled by default, most deployments would never turn it
> on.
> 
Difficult to get the balance here, as I think we also have a duty to not break existing deployments.   I would have preferred the initial set of defaults to be backwards compatible, with a subsequent change (say at Juno.1) to change them to the "on by default"

Phil